Meguiar's Gold Class soap is cheap and won't remove wax or polymer. You can get it by the gallon. I use brand new soft sponges and replace them frequently.
I bought a trunk-load of Meguiar's products including their Gold Class liquid wax. I know that Zaino and Klasse have made their followings, but I'm still into carnuba. The shine really is quite good and the protection seems to be there - we'll see how long it lasts.
My favorite problem solver is the Porter Cable random orbit polisher I recently purchased. It has taken all the work out of creating a mirror finish and it makes scratch removal a breeze. Without a doubt, there will be scratches. When it comes to dark finishes, they come with the territory. You're thinking ahead to limit them, that's good. Water spots are a HUGE pain, too. Don't allow them to occur or you'll really have your work cut out for you. Be absolutely certain to wash a COOL car in the SHADE, no matter what time of year, and dry QUICKLY. You'll be much happier.
I'm using a light pass with a California Water Blade and final dry with soft 100% cotton white hand towels made by Royal or Fieldcrest. That blade has cut my dry time down to about 15 minutes from 40. I really don't like drying.
Oh, you can also check out one of the detail bibles:
<font size=-1>[ This Message was edited by: 01GTCOUPE on 2001-10-29 15:42 ]</font>