After a friend had given us his Roomba 770 "in care" and we were able to test these few weeks I have come to appreciate the usefulness of Staubsaugroboters. We have in the whole house linoleum and carpets just because this is how a robot out to be rather weak suction power but super, you come home and the floor is spic and span after the robot has done his job in his absence. As was then offered at the Blitz offers of Dirt Devil, I ordered it, the Roomba has indeed returned to its owner. Sure, the Dirt Devil can not automatically time died wobbles start in the absence, but it costs only a quarter compared to the models of eg Neato and iRobot. The brushing and suction power is in any case properly, and also the navigation around obstacles. The Dirt Devil pushes less hard on furniture as the Roomba 770 and has added a similar strategy to anywhere, it moves the walls as part of its program and takes along thanks to the rotating brushes even with the dust from corners. He has also never bogged down with me somewhere. However accumulates the sucked dust, as described in other reviews, in fact right behind the suction opening, which then can quickly remove the suction and you have to empty the container accordingly. But for a room that is perfectly adequate. All in all a very good value for money (price 90.-).