works when it works, lots of problems
its pretty ok when it does what it is supposed to do.
the biggest problem is it will always drop from stairs if it drives directly to stairs. the front wheel drops down and roomba will get stuck.
so you have to use the beacon to limit the area which results of limiting much more, so no cleaning happens near the stairs.
the annoying clicking sound it make during docked. you can find other people complaining this too and no response from the manufacturer.
so you need to pull the plug after a 12+ recharging after the previous use.
the roomba will not recognize the dock always at start and rolls the home base somewhere else so that it cant never return again.
also sometimes roomb will drive over the home dragging it somewhere and never be able to dock. sometimes we come home and roomba drives around its home and cant find it because its pushed to some corner.