I would go with Zaino even though I've been using Klasse products for years... IMHO Zaino is more "advanced/modern", Klasse is a classic and requires a little more effort to work (you could go wrong for the first few times with the SG)...
Yes there are more Zaino products, that's because there are too many possible applications, and in order to achieve that so-deep-sparkling-mirrorish finish, you have to do experiment with their products... Try to speak with someone who has much experience with Zaino... I've seen some stunning results with Zaino in the detailing section of BImmeforums.com... GL
edit: btw, if you're only looking to buy one of either the two products it wouldn't make sense...
Last edited by blink21me; December 23rd, 2006 at 06:10 PM.