I was previously owned by a favorable device from another brand. When Roomba 780 I can only say that the cleaning performance is hervorangend. Battery performance is also very good. Processing and accessories well. Why only 3 stars: Here was a large piece of plastic in the brush, a brush which has ruined me. In addition, the Roomba is relatively loud for my taste. For the price I would have a significantly quieter device expects. And, if you let it run only when you are not at home, it fits already.
