[This review was collected as part of a promotion.] I've had the Luba 2 AWD for 3 months of mowing. It does a good job mowing a lawn that is rather "basic". Bottom line: I don't know if any other brand would do better, so I'm sticking with this one. It gets the job done. My lawn has a couple mulch areas where I set up a no-go zone and I have a corner house with semi-steep drainage ditches on both sides. In this review I will only point out where the Luba needs improvement in no particular order.
1) Time estimate: If you add "no go zones" it doubles or triples the number of turns it has to make. The time estimate does not account for this and are way off due to loosing about 20 seconds per turn. This added more than an hour over the estimate on my lawn.
2) The weight distribution is heavily on the back where the battery resides. So, when turning, the front wheels have NO traction. they might as well be swivel wheels. This becomes a major issue when turning while on an incline (my drainage ditch).
3) It is unable to make smooth turns. The software will not turn while driving forward. It stops forward movement, turns, then begins forward movement. It wastes lots of time when making any form of arc around the lawn. The software DESPERATELY NEEDS to be able to smoothen turns.
4) Never have it turn on a decent slope (drainage ditch). The back tires will tear up the ground since the front wheels have no grip to assist in the turn (especially if it is moist). I live in Virginia, USA. We have high humidity, so the ground is frequently wet with dew. But it cuts the grass just fine when there is a little dew. Lord help you if it determines it can't make the u-turn due to slipping. Add 2-2 minutes for it to figure things out. Its own weight becomes the problem in this case. The Luba mini made the u-turns just fine, but not enough battery to finish my lawn, so I upgraded to the Luba 2.
5) I got this mower because of the 4 wheel drive. I don't think it helps, but I never tried another brand.
6) Read the Facebook page to see where there are many areas for software improvement that are simply ignored or de-prioritized. But don't worry, they have a setting to make a fancy design in your yard, because THAT is important.
7) If it ever gets out of bounds (due to slipping), you can't fix it remotely. You have to physically move it in order to get it to work again. Lots of people complain about this.
8) Don't try to get right up to a no-go zone boundary. I have stones around mulch areas. If I try to get too close when defining the boundary, it might snag a stone and have problems when mowing. So, I defined the boundary about 3 inches away and I manually use an edger to get the edge.
9) You must be smart when defining the map of your yard. Some areas may be best to mow in one direction while other areas are best to mow in another. It can really save time by reducing the turns.
10) Due to the slipping in the drainage area, I had to break my yard up into 1 main part and a separate part on the other side of the ditch. This way, it won't try to drive through the ditch or try to make turns on its slope. I have to manually mow the ditch. Since it is normally rather wet in that spot, I think it best to avoid it with any robotic mower.