I have 3 Neato's. Latest one is a D75. They suck. (in a bad way) Thing stops already when you fart. I can only use it supervised otherwise it will beep because it's blocked all day.
I am going to see if Xiaomi did a better job.
I had two, when they are working ok, it's a great robot. But after 6 month for the first and 1 month for the second, they stopped working correctly. They fall through stairs. The second one should have fixed the problem but on the first day of use it felt. Now it's not working at all anymore.