Just wondering if there are any polishers out there that are cheaper than the PC but give close performance b/c i don't really want to spend that much on one right now. i found this one on ebay how would it compare to the PC or is it like apples and oranges? http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2416597518&category=35000