Before that, we had a simple robot vacuum cleaner from aliexpress, it broke down, we decided to buy something more serious and with a guarantee and service in Hong Kong. The choice fell on this model, on the advice of a friend, she has the same one. We are very pleased with Aqua, especially the ability to remote start from the application. I was also pleased with the presence of a magnetic tape for fencing places where he should not call in, we have such places, and the robot would get stuck without a tape. It works - vacuums, quickly got used to good cleaning, at first they adapted, now everything is fine, some shortcomings were solved with the help of a magnetic tape.