I use Zest
rotflmao!
As far as car care goes,
http://www.autopia.org has a WEALTH of info for any enthusiast.
I used to be a diehard Zaino user, and now pick and choose items out of their line. For my daily driver (the Mazda), i'll still use exclusively Zaino products, with the addition of Eagle One Wax as U Dry for the post wash.
For my ZR1 and my Trans Am, I have upgraded to the german made line of Menzerna. I apply their polishing products with a Porter Cable buffer, and their glaze and polymer sealant by hand. My wash is still Zaino Z7 and my quick detailer is still Zaino Z6.
I have thrown away all my cotton towels, and now use only exclusively high quality microfibers.