I don't know much about this Ibiz stuff you saw at the car show, but for the most part, those products they sell such as the one you mentioned at show like that are often rigged to perform REALLY REALLY well at the show, but when you get it home, its just like every other wax, wash or polish you've used, if not worse. The hoods, and door panels they use are often coated with layers upon layers of clear coat and special paint additives that make it gleam and or assist the product they're selling to work optimumly. One trick of the trade is to use olive oil! YES olive oil. It will gleam and repeal water like NO wax in the world! But obvioulsy this would never work in real world condition, but a at show, on a little hood, fender or door panel, it works wonders!
The ONLY product that I have ever bought at a show that pretty much speaks for itself and did not need any fancy demo was FITZ the metal polish! Its the BEST metal polish you can buy period! No question, and or doubt about that. Pricey stuff, but worth it!
Another product that I just recently saw was Mr Clean's AutoDry system. A friend of mine bought it and tried it out and it actually works! It washes your car with a special soap and filter nozel that eliminates the contamination in water that creates water spots. You wash, rinse, and the car dries 90% spot free (even though they claim 100% spot free, its almost there). Once the weather clears up here in NY and it gets a little warmer, I'm gonna give this stuff a try. The website to the product is...
"See, the problem is that God gives men a brain and a *****, but only enough blood to run one at a time."