Im going to wax my car the for the last time this weekend for the winter. I have a question about those buffers you can buy at say PepBoys. Do they work better then just using a rag to take off the wax and buff? Or is a rag just as good? I've never used one before i guess because i've heard that if you dont use it right it could damage the paint or somthing like that? Is that true? How hard could it be to use?