Having the orbit sanders PEX400 now used several times, I can say that it works very well. He is easy to handle, works fast and tidy. Processing acts dibasic. So far I am very satisfied. My hope therefore to be able to polish out a few minor scratches out of my car-paint but was not satisfied, but I had not really expected as it probably needs more power grinder with that cost a lot more. For the price of the Bosch PEX 400 recommended clear!