I have owned ny DeWalt for about eight months. Sometimes the on/off switch gets caught but really no trouble. I have probably put close to 500 hours of heavy duty work with this. C & D side plywood, raw wood as well as refinishing. I just had to replace the pad today as it losts its grip on the sandpaper. But again a very minor problem. My sole major problem is how hot the handle gets after about two hours of consistent sanding. However, the finish is beautiful and I would highly recommend it to anyone.