I have a friend who has a 10in waxmaster-type RO buffer. What kind of bonnets/pads should he use for just typical wax? I've seen terry and some foam bonnets for them- is the terry one going to be soft enough not to damage the paint? Will commercial foam bonnets work, or is there something else I should look for? Going to a PC isn't really an option, I'm not sure he wants to make that kind of investment.