I refuse to buy Meguiar's because of all the hype....even if it's true. I used to use Wax Shop products, but they seem to have disappeared from the market. Wax Depot is offering Wax Shop "replacements".
You'll know what I mean about the hype if you read car magazines, go to car shows or watch car related tv. They even have their own tv show now (Car Crazy, hosted by Barry Meguiar).