If you are referring to the PC, I use a cutting pad (foam) with a medium abrasive first. If that doesn't cut it, then I step up to the heavier abrasive. I have had some micro scratching from the more abrasive products used with the PC ... I think it is because they do not break down like they would using the rotary. I have used SSR 2 with Meg's cutting pad with great results removing minor scratches and still leaving a decent finish.