First - the picture quality of this this TV is wonderful. It's just what I wanted: a small TV that still has high resolution (1080p) and refresh (60hz). This is a wall mounted kitchen TV, so I didn't need anything huge or ultra HD; primarily I'll use it for sports on the weekend, news while cooking, and the occasional kids show.
While the picture quality is just what I need, the remote is frustratingly touchy and/or unresponsive. Simple actions, like changing inputs or typing in a channel, are frustratingly difficult. The buttons don't have much height to them, are hard to locate, and don't respond reliably. In short, it feels like a cheap interface and it doesn't perform to expectations.
The Smart features of the TV feel weak so far. I was really hoping to have a TV with everything built in; this is a wall mounted kitchen TV with no room for peripherals, dongles, etc, but I'm disappointed in the sluggish performance of the built in features. Startup is slow, and we've had problems with the TV remembering our WiFi. It's frustrating and makes me want to connect a Roku.
And finally, the biggest reason I bought this TV vs. others in its class was for the built in Chromecast. It's a wonderful idea, and would perfect for where I'm putting the TV - no dongle, no power cord. I just wished it worked better and with the same functionality as a real, external Chromecast device.
Specifically, I am finding screen casting of my Android phone to this TV to be slow and laggy. My WiFi signal is very strong where the TV is so that doesn't seem to be the reason. And, I am forced to resort to screen casting because the Vizio built in Chromecast is often not recognized by my phone or by specific apps on my phone, like YouTube and Watch ESPN. WatchESPN specifically is NOT compatible with Vizio smartcast TVs; this is a known issue, as I have discovered, but it's very frustrating as watching sports via cast while I cook and clean was one of the main reasons I bought this TV in the first place.
I have another standalone Chromecast in the house and can perform direct comparisons; so far, the built in "Chromecast" just isn't as good. Disappointing. Maybe I'll plug it in to this time when I need it, but I was hoping to avoid the hassle of moving my dongle from TV to TV.
I'll continue to investigate and with with the TV. Maybe it'll get better? Long story short, first month impressions: great picture, features not to to par.