Hello There, the iRobot Roomba 871 vacuum cleaning robot sucks good! have another and before that run .The iRobot has much still brought out! .Naja New broom sweeps clean they say! .As The duration is on I do not know. The build quality is ok. The drawer of the iRobot zuzm empty is making the filters miot well done .Einfaches clean. However, I think for 599 Euro there is just too much for a vacuum cleaner! For the money, I'd rather get a correct me!