Well said ygmn.
I Zaino'd my Av with 3 coats just this past weekend. Like ygmn said one of the major benefits of Zaino is its ease of application, and removal, and that it lasts a LONG time.
Carnuba based waxes melt and disappear from you car in about 3 weeks or so. Alot of them also contain abrasives to "polish" away scratches, so applying multiple coats does you no good, because you polish away your last coat.
Zaino contains no abrasives and therefore can be layered. The more layers the deeper the gloss looks.
had an excellent comparison between pretty much all the major waxes. Hopefully the site will be up soon again.
) rated the best for shine and clarity.
) rated second for shine and clarity
However, since PS21 is carnuba based it is gone in a few weeks, where as Zaino can last for up to 6 months.
Zaino smells AWESOME too.
If you have any other questions about Zaino, let them fly I'm sure us Zaino faithfulls would be glad to answer them.