I'm a big fan of Chemical Guys products. I've had been using the following 3-step process of CG products on my X5:
Extreme Shine EZ~Creme Glaze
Butter Wax
M-Seal sealant
Now that I have a Sapphire Black car, I'm going to try out the CG 5050 Limited Series which is supposed to be both spectacular on dark colors and long lasting.
http://autopia.org/forum/detailing-p...=chemical+guys
Plus the CG products are much less expensive than Zaino which is a factor if you detail alot of cars.