thanks all. now i got some new names to check out. anyone use TP-LINK TAPO RV30? got big battery, lidar and around 1k price. i have some tp link devices like camera and smart plug. they seem ok reliablility.

I bought both Tapo RV10 and RV30 used for less than 1k together just to try out.

Overall, the RV10 is simply too stupid. It committed suicide by going down the staircase and spilled it's guts out.

The RV30 was slightly smarter but will never learn of new area unless reset the whole unit to factory default.

For example, if an area was previously unavailable during the initial learning process, it will avoid it. But after the area was available, it still refused to relearn. If reset to factory default then ok.