I have used several carnuba waxes and several poly compounds as well on foreign and domestic marques. I prefer the polyglycoat compounds like Zaino for the length of time they last. That said, Zaino is without a doubt the best I have run up against but what a pain to apply (takes 36+ hours to do right). The steps include claying the car, a precoat, and then multiple layers of the final coat with dryng time in between applications. For my money and time I compramise with a German product called Klasse. This is a cleaner poly dual purpose product which also comes in a poly only final coat. I does not leave as deep a shine as Zaino (nor does it smell as good) but it only takes a few hours to give a royal treatment to the car. Costs $40 US for the kit which will cover about 8 applications. FWIW
