You MUST MUST MUST get a random orbit buffer or have years and years of experience on a standard grinder/buffer. You can get an inexpensive orbital one from Wal-Mart, Sears, Sam's Club etc. IMHO there is no need to spend $500 on a buffer when a $50 one will do just as good for you. Its not the tool, its the operator. But most definately get an orbital one or else you will burn your paint off your car with a regular one.