For years I had an old General Electric motor on my Atlas 6". When it finally died, I replaced it with a cheap import motor from Harbor Freight. It was terrible, vibrated like crazy, very loud, shook the whole bench, stuff falling to the floor. About 6 months ago I replaced it with a Leeson motor. The Leeson motor is wonderful, so quiet and smooth. It's a night and day difference. I am a Leeson fan now.