[This review was collected as part of a promotion.] What stood out to me most after my first few brushes was how sleek and premium this toothbrush looks and, more importantly, how incredibly clean my teeth felt afterward. The all-black design is beautiful and modern, and I love that the brush heads match. Compared with my previous electric toothbrush, I immediately noticed a difference in how thorough and precise the clean felt. My teeth felt noticeably smoother and fresher, like the feeling you get after leaving the dentist. I also really appreciated the four different cleaning modes and three intensity settings. Having the ability to customize the brushing experience depending on what I want to focus on is a great feature. I personally always use the highest intensity because I love that extra-clean feeling, but even at the highest setting, the bristles feel soft and gentle on my gums while still being strong enough to effectively remove any plaque. The pressure sensor is another feature I really love. The light at the bottom of the toothbrush gives you an immediate visual reminder if you're brushing too hard, which makes it much easier to adjust your pressure and protect your gums. After using this toothbrush consistently, my teeth have felt cleaner and smoother after every brushing, and my mouth has an overall fresher feeling. I'm definitely impressed with how clean my teeth feel on a daily basis. The additional features really elevate the experience, too. The rechargeable travel/storage case is sleek and convenient, and I loved that it came with an extra matching brush head. The toothbrush also gives a small vibration to let you know when it's time to move on to the next section of your mouth, which is helpful for making sure you spend enough time brushing each area. My only suggestion would be to add a visual reminder for this as well, similar to the visual pressure sensor. Overall, I truly feel that the Philips Sonicare DiamondClean Smart 9350 is superior to other electric toothbrushes I've used. It is clear why they call it the DiamondClean Smart electric toothbrush. It combines a beautiful, sleek design with thoughtful features and, most importantly, an incredibly thorough clean. It has made brushing feel more effective, personalized, and enjoyable. Thank you to the Stellar Product Testing Panel for providing me with this electric toothbrush.

[This review was collected as part of a promotion.] I am a loyal electric toothbrush user because of the improved clean compared to manual. I like all the different clean modes. This model is great because it has the pressure sensor which let's me know to back off. The app even alerts me where I need to focus more which is consistent to feedback at my previous cleanings. It reminds me to do that I also love how you can get matching black brush heads which looks way better than having a white head on a black device. They also have the sensor technology. This is my favourite electric toothbrush I've used. Incredibly clean teeth are important. Thank you to the Stellar Product Testing Panel for providing it to me to use in exchange for a product review.

[This review was collected as part of a promotion.] I received my toothbrush through the Stellar Product Testing Panel and was very excited to try it. I had used rotating electric toothbrushes in the past, but was less familiar with the Sonicare technology. Let me tell you, I was very impressed with the results. The toothbrush is easy to use. It is also very gentle on my teeth and gums, which made me happy because I have sensitivity issues. I was also very pleased with how well the toothbrush cleaned my teeth, including between my teeth and hard to reach areas. My mouth felt sparkling clean after my sessions, and my teeth soft and slippery. I plan to continue using my Diamond Clean toothbrush.

[This review was collected as part of a promotion.] I had never used an electric toothbrush before, largely because I was hesitant about the cost and wondered how much better it could be than the free toothbrushes from my dentist. The difference, however, has been remarkable. Thanks to the Stellar Product Testing Panel for providing me with this electric toothbrush. The first few days required some adjustment, but I immediately noticed how clean my teeth felt after brushing. Although the sensation took time to get used to—and the sound bothers my dog—the results have been clear: I find less debris between my teeth when flossing, and at a dental appointment about a week after I started using it, my dentist noted that I had significantly less plaque than usual. I look forward to seeing the long-term difference between cleanings. After trying every setting, I settled on whitening mode because it best supports my current dental goals; a friend even asked whether I had been using a teeth whitener. The toothbrush looks sleek, and I genuinely look forward to using it. I was initially concerned that I might brush too hard or move too quickly, but its guidance on pacing and pressure is clear and easy to follow.

[This review was collected as part of a promotion.] I recently received this item from Stellar Panel in exchange for my honest feedback. Honestly? I love it. Taking it out of the package, it FEELS luxe, and it's one of the most aesthetically pleasing toothbrushes I've ever owned. They've thought of everything… you know how chargers always get kind of gross? Not this one, they include a removable base to sit between the charger and the toothbrush so you can easily rinse it in the sink or toss it in the dishwasher for a deeper clean. Such a small thing but I love it. they also include a couple of different tooth brush heads so you can play around with them to find your preferred combo, without needing a refill pack right away. The carry case is great too and fits all pieces together in a good-looking case. What stood out to me immediately after my first few brushes was just how incredibly smooth and polished my teeth felt, it felt like I had just walked out of a professional dental cleaning. Compared to my previous toothbrush, the cleaning on this is next level. The customization options are a really nice feature. There's different mode and intensity settings so it's super easy to tailor each session to exactly what my teeth and gums need that day. I especially appreciate the built-in pressure sensor; it gives me peace of mind knowing I'm getting a thorough clean without pressing too hard or causing irritation. Since switching to this toothbrush, I've definitely noticed a positive change in my overall oral health. My gums look and feel much healthier, and my mouth just feels cleaner.

[This review was collected as part of a promotion.] I received this toothbrush as part of the Stellar Product Testing Panel, and I was honestly impressed after the first few uses. My teeth felt noticeably cleaner and smoother compared to my regular toothbrush, especially along the gumline. The pressure sensor is also my favorite feature. It makes it easy to know when I'm pressing too hard, and I found the brushing experience to be gentle on my gums without feeling like I wasn't getting a thorough clean. I tend to brush pretty firmly, so having that feedback has made me much more aware of how I brush. Overall, I'm really happy with it and would definitely recommend it to anyone looking for a better, more customizable brushing experience.

[This review was collected as part of a promotion.] I received the Philips Sonicare DiamondClean through the Stellar Product Testing Panel. The toothbrush is sleek, easy to use and consistently leaves my teeth feeling thoroughly clean. Compared with my previous electric toothbrush, I didn't notice a dramatic difference in the overall brushing experience, but it does a good job without feeling harsh on my gums. I like having four brushing modes and three intensity settings, although I tend to stick with the same setting for everyday use. The pressure sensor has made the biggest difference in my routine because it lets me know when I'm brushing too hard. The app is an interesting feature and offers detailed insights into your brushing habits, but it felt like overkill for me personally. I don't feel the need to track that level of brushing data and didn't find myself using it regularly. I haven't noticed any major changes in my oral health or had a dental checkup since I started using it, but my teeth feel clean and fresh after brushing. Overall, it's a well-designed, high-quality electric toothbrush with plenty of features, even if I didn't personally need all of them.

[This review was collected as part of a promotion.] I tested this product daily for about two weeks as a participant of Stellar Product Testing Panel. I got the black color. The handle being dark makes the light-up parts easy to see and the matching charging base looks sleek. In hindsight, however, I would choose white to match my other bathroom appliances. Instead of plastic, the 9350's packaging uses paperboard trays. Replacement heads are made with 70% bio-based plastic. I think these sustainability features are a must today. The charging base makes a quiet sound and lights up dimly for a brief moment when the handle is placed on it. I was pleasantly surprised that it is not the typical loud chime and continuous bright light that a lot of smart electronics use. The wireless charging feature is neat and seems like a good fit for this type of product (more waterproof). It is extra technology though, and a built-in battery makes this unit larger and heavier than simpler models, even older versions of similar Sonicare products. The battety level indicator on the handle might feel a little unintuitive at first. At full battery, the icon is a solid white bar. When it drops down a level, it turns orange while remaining a solid bar. I haven't seen the next lower level. Seeing it for the first time, it gives the impression that it is at a critically low level, but I had skimmed the manual and guide before use so I knew the battery lasts for a long time. Upon charging again for less than 10 minutes the bar turned white, so I knew the orange color must mean the level just below "full". The vibration intensity level is indicated with one, two, and three lines, so I expected the battery level to be indicated with lines, too. I haven't used the app during this testing period. I don't need it or want to use it while brushing so I didn't bother connecting via Bluetooth. I would prefer to turn off Bluetooth on the handle but that's not an option. The handle seems to be either always on or too easily activated by vibration. Pressing the power button turns on and off the vibration of the brush but it doesn't switch off the power. After a short period of non-use, the lights turn off automatically but the handle is always on standby. When I simply grab the handle to use it again after several hours, or when it gets accidentally bumped while sitting in a cup during non-use, the handle lights up. I feel that this drains the battery unnecessarily. I would prefer a more sure on-off mechanism. For the first few uses, the replacement head felt hard to put on and take off. I wasn't sure I was doing it right and was worried about breaking it. It turns out that it just requires some force when attaching to the handle. I was expecting a much lighter operation with a clicking sound when done correctly. But it feels easy to do now. Just a firm push and pull are all it takes. Something I have been uncertain about is the brushing technique. The instruction manual says that a "back and forth" motion should be used, a motion that is different from using a regular toothbrush. I also felt that a different motion is needed while I used the Sonicare toothbrush. However, I haven't been able to figure out what I should do (move up-and-down or side-to-side or circular). "Back and forth" is too vague. There are four brushing modes and three intensity levels. With the brush head I used, I couldn't really find a comfortable setting. Even the lowest level is too intense. I encountered a major problem. This could be the fault of that brush head, the compatible DiamondCare W model (shown in white in my photos), something that can be remedied with a different brush head replacement. I'm hoping it is. But unfortunately, the damage has been done. After only a few days of careful, gentle use (as the brush feels intense), my teeth got worn down and I'm now experiencing significant tooth sensitivity. Eating mildly acidic foods like an apple feels torturous. Brushing also feels uncomfortable. I can always feel the sensitivity and discomfort. I know that treating enamel loss is extremely difficult and expensive, so I'm very saddened by this outcome. I've used a simpler electric toothbrush shortly before this period. I've used manual toothbrushes with a firm bristle in the recent past. I haven't been eating much acidic food. This new sensitivity is from using this new Philips toothbrush. I now realize the bristles of the replacement head are very, very stiff. Coupled with the motorized vibration, this is a really "powerful" toothbrush. I hope the problem on the brush side can be easily fixed with a softer replacement. Since realizing the problem after a little over a week of use, I've been brushing manually with the same Sonicare unit. The bristles indeed feel very stiff and uncomfortable with my worn-down teeth. Yet I haven't been able to do a proper cleaning job while brushing very gingerly. I think at this point, even the default brush heads (A3 and 2-in-1 models) included with the 9350 will be too harsh for my damaged teeth to use normally. They're not as stiff as the W model but I suspect that I will need a softer replacement.

[This review was collected as part of a promotion.] I received the Philips Sonicare DiamondClean Smart 9350 from Stellar Panel to test out and was incredibly happy that I did. I've tried other electric toothbrushes and as someone with sensitivities, the DiamondClean has come out on top. The toothbrush has easy to use functions, not as loud as many others, great battery life, teeth feel so smooth after brushing, teethbrushing has become an enjoyable activity again. I tend to use the “clean” function as my go to. It is gentle and feels really nice along my gums. At this moment in time I don't have a bad thing to say about it. If anything, it convinced me to purchase travel sonicare toothbrushes for my children.

[This review was collected as part of a promotion.] I received this Philips Sonicare DiamondClean Smart 9350 through the Stellar Product Testing Panel, and honestly, the difference hit me right away. You know that super smooth, squeaky-clean feeling right after a dental cleaning? That's pretty much how my mouth feels every time I use it. ​It looks really sleek sitting on the counter, feels solid, and I love the charging glass cup. You just drop the brush in to charge it instead of dealing with an awkward plastic dock, plus you can use it to rinse. ​I quickly realized the highest intensity setting is way too much for my mouth, so I stick to the lowest (sometimes the middle one) paired with the Gum Health mode. It's plenty powerful to get my teeth clean without tearing up my gums. The pressure sensor has also been a game changer because the handle immediately buzzes if I press down too hard, which finally broke my bad habit of scrubbing aggressively. ​Connecting it to the app turned out to be my favorite part. Seeing the visual map of my mouth and getting real-time feedback on clean quality showed me just how many spots I was rushing past or missing completely. Between the app and the built-in timer, I'm actually taking the time to brush evenly for the full two minutes now.