I am looking at the PC 7424 on www.coastaltool.com and also on autogeek and all the other places. The one on autogeek and coastal tool seem to come with a 6" backing plate/balancer with them. I assume thats what I need but what exact pads do I need to get? I know I want 2 polishing pads and 1 finishing pad as I will be using some SSR2 and some PwC on a fairly new vehicle with spider webs etc that are fairly light. Anyway, I am thinking I need the 6.5 inch pads? Are they all velcro backed? I just want to make sure I get the right stuff for the weekend. Also, whats the difference with the 7336 I think? The polisher one....? Thanks alot.