He came to replace the Roomba 563, which served faithfully for 8 years, periodically changing batteries and components. The area of the apartment is only 65 sq. M., so I don’t see the point in overpaying for 960, 980. Considered between the 800 series, the fact that the new e5 eventually outweighed in terms of the purchase decision. You can compare at least how much Roomba with other robotic vacuum cleaners, but this model, like the 800, 900 series, has no analogues. In almost every third-party model there are uncomfortable tufted brushes. e5 is essentially a new generation of the 600 series. The 900 models run a little quieter, last longer, have more features in the application. The robot justifies itself completely like its predecessor. The main thing is to keep it charging around the clock and clean it fully at least once a week. In general, iRobot for me is the iPhone in the world of robots :)