bought 7 to replace 980, which was sold because noisy, outdated with brains and because of the dimensions it got stuck under the bed, but comparing with 7 I can say for sure that 980 is the standard of reliability and cleaning quality among all robots, but progress does not stand still. Few people say, but like any technique, robots break down the same. Airobot practices modular repair. And if you are a little friendly with technology and know how to use a screwdriver, then any breakdown is eliminated within an hour. Example: the right wheel broke on 980, the robot stopped driving straight, I ordered the wheel module (600) through the auto-and-so and changed it and the robot ran on. While the service centers told me about a software failure and a camera change. the robot cannot be positioned in space, etc. All other nodes are just as easy to change modules. For a province where there are no good services, but there is a guy with a screwdriver, this is a fundamental point. And I also have a child riding a robot while cleaning. The video does not allow to post, but look at the photo from the video. So all the cleanings turn into such rides. What robot and what wheels will withstand? ))) Only Airobot. By the way, 7 has not yet broken.)) This is not advertising, but simply as a fact. The Chinese (also a famous brand) worked a little bit, barely passed back to the store. He did not suit me in any way.