I've used it and like it.
The Glanz wax has pretty good durability and a very unique look. It's maybe 80% as reflective as Zaino while providing 30% more depth. It is very, very easy to apply, and only one coat is needed.
It looked really good on my wife's car, whcih is silver. I am always contemplating switching back to it. Unlike most people, I think light colored cars benefit from waxes which add depth. I used Zaino on my wife's car for about a year but will never use it again. It's not that it didn't look great -- it did -- but I just think that a wax with more depth looks even better. Einszett looked considerably better, IMO.
The Einszett poishes are really outstanding. They do a really good job on swirls and oxiadation and break down almost immediately- they don't haze at all. I think they are far superior to the 3M polishes.
Gummi Pfledge, as everyone has noted, is a really great product.