I'm going to be ordering a Griot's polisher soon (only experienced with the old PC), and was thinking of getting a couple new pads as well. I was planning on picking up a light polishing pad and a finishing type pad. I've had a couple 6.5" LC white pads I've used that seem to do the job well. But I'm wondering if I should try a 5.5" pad instead, or if it matters with the more powerful GG? Reason I ask, is I figured I'd take advantage of the BOGO at a certain vendor for the larger pads (once I figure out which green is the right polishing pad).