The Porter Cable is great. I really like my Cyclo, but you can correct some pretty nasty oxidation and scratches with the PC and a cutting pad. It's also very safe.

By "cutting" pad, they mean that the pad is dense foam. Think of a firm mattress and a plush mattress. A firmer surface can transfer energy (heat) more efficiently. Of course, you can get some marring with a cutting pad (very rarely), which is why you would go to a softer polishing pad and not just buy one type of pad.

Bottom line: The PC will make paint correction easier. I was so happy when I first used mine. If you can swing it, go for it. You can get a similar finish by hand, but it takes much more time and work.