I just got my GG a couple weeks ago. The box says "Professional", but the actual unit and the manual do not. Both the polisher and the manual say 2-3 for waxing and 4-5 for polishing.
Search my previous posts regarding my second and third Griot's 6" DA purchases. BOTH were not nearly as powerful as the one I've had for a over a year("professionl" version). I will never purchase a Griot's DA again. The Meg's G110v2 works just fine!