Thanks to Mike (Go-N Def) and Joe, Jr. (Darktech, don't think he has joined this forum yet) I have learned enough to use my buffer with confidence. I sometimes get confused between sealants, polishes, and waxes but simply refer to a print out they gave me. I use Meguire's top-of-the-line products but would have no problem using Poor Boys or Zaino as I've seen great results with those. I've received many comments on my GXP but, like most things, the more you know about something the more you realize how much you have to learn.