I've got a Midnight Blue 1990 560SEL in great shape. There are a few minor scratches where the keys hit the door (and where the Mobil station attendent dragged the spare across the hood - ugh!) and numerous swirl marks, oh, yeh, and a couple of water spots (?). So, I start by washing the car with (what/whose?) car wash, then I use Scratch-X on those scuffs, and (what/whose?) on the swirls? If that's the extent of my damage, is clay necessary --- is it always recommended? Then I polish it? or is that what the clay does? Then when it looks like glass, I wax it. All the products are probably Meguiars (although their website is too extensive for me as a novice to figure out). Oh, I forgot --- I go out and buy a Porter-Cable 7424 Buffer for the claying, polishing, waxing. How'm I doing so far?