I was trying to refrain from posting, but I can't resist... When we tested the Zymol products (and bear in mind, I used to use Titanium exclusively on my cars), we quickly saw that there were products that were much better and cost a lot less.
A few that come to mind are Collinite, Gold Class, Griots, P21S, and even some of the lower cost waxes like the Turtle Wax offerings (as far as waxes go). Durability wise, the Zymols were horrible - they were the only test swatches that got scratched from twigs & critters crawling on the panels.
They were also pretty hard to apply & remove (ever wax an entire car with your bare hands? The novelty quickly wears off), and they all dried pasty white (when instructions required them to dry completely). I also have to believe that despite their claims, there are oils in the wax - otherwise, how would it deepen-up the look of the paint?
That said, we're looking forward to testing the really "high end" products - Atlantique, Destiny and Vintage. I'm not sure how they'll do, but it will be interesting. HD-Cleanse is a great pre-cleaner, especially if you're looking for something a little more agressive than say the Pinnacle or P21S cleansing lotion.
Zymol has it's merits, but I believe guys like Ralph Lauren & Franay get more out of the "shock" associated with an $1100 wax than they do from the actual product. Heck, look at John Travolta's requirements for his next movie, "Basic" - he requires 8 new Armani (or Versace, can't remember) plain black T-shirts PER DAY, at a cost of $350.00 each. He refuses to wear Fruit of the Loom or Hanes, and he doesn't believe in dry cleaning (something to do with Scientology).
So, I'm happy wearing a $1.50 T-shirt and using a $20 wax - works well for me, and no one will know the difference unless I tell 'em.