im using a PC set at speed 5. I don't know, i just couldn't get a flawless finish without following up with a finer polish with DACP or SFP. I do work the product long enough but under sunlight the paint looks a little hazy because of those fine fine swirls left by the abrasives. I did have good results following up with menzerna FP but just wanted to know what other products work as well. Im having better results with IP than SFP. IP leaves the paint darker and no swirl lines like DACP or SFP. Maybe it' my techniques but I tried so many times but couldn't get a nice finish with meguiars polishes without folowing up with very fine polish. :nixweiss