[Ronbo]

I have one and found it to be a complete disappointment. I had to follow it around to make sure it wouldn't get stuck under furniture, which happened frequently. It would also get caught on our area rug and jam. The sensor that prevented it from falling down stairs was also hit or miss. It would frequently get to the edge of our stairs, stop, and start beeping.

All in all, our house just isn't set up to be Roomba friendly. Comparatively it's much easier and faster to vacuum with a traditional vacuum cleaner.