From same brand and a shape similar to his brother, the iRobot Roomba 581 - robot vacuum, this vacuum cleaner scrubber is really disappointing. - It is noisy (impossible to keep him company in the same room) and is annoying squeaks old rusty stuff. - It hangs at every opportunity, unlike his brother. - He drove right to the obstacle without even slowing down before. - It is delivered with a single barrier, while his brother has three. In the same area, Roomba 581 passes everywhere, never stops. Scooba ROB115, asked him to place physical barriers in places where it hangs. every time I came back into the room, I found it locked while his brother, programmable done its job and will line up on its base without incident in the same environment. - It is not programmable (but since he can not make a complete cycle without asking for help, we regret a little less ...). Ditto for the fact that it ranks not own (but you must empty the dirty water and refill with clean water, this can be explained). - He does not respect his big brother tags. it's a shame because it comes with only one and he really need ... We must therefore install both tag sets in the same premises. Moron ... Morality, not recommended if you have fragile furniture. Just useful in a completely empty garage and with equal ground so not interesting.