Device meets expectations. The engine noise is pretty loud allergings. Have the unit for 2 weeks in use and previously cut about 20 running meters in the most diverse latitudes in an old plastered hollow brick wall. I'm surprised by the good cutting performance of diamond wheels. The handling is, except for the changing of the targets, very comfortable. Unfortunately, the filter of my wet / dry vacuum cleaner was quickly added to the fine dust. In oftmaliger cleaning of the filter is a low dust possible. Absolute buy recommendation!