A lot depends on what color your car is. Mine is black. I think I've tried most of the best products out there and this is what I've come up with:
Wash - P21S Bodywork Shampoo
Clay - Clay Magic
Polish - P21s Paintwork Cleansing Lotion
Wax - P21S Carnuba Wax
Convertible top care: Renovo Soft Top Cleaner/Reviver
Plastic window cleaner - Renovo
Plastic window polish - Plexus Plastic Polish
See pics of my car here:
http://986forum.com/forums/showthread.php?t=3413
You can get almost all of this stuff from autopia.com. You can order Renovo from
http://www.renovousa.com/.