For a car show, I did one car that has many layers of Zaino by adding a coat of Souveran wax (black car) and it looked really nice. After the show, I stripped the wax and clean it for another coat of Zaino prior to storage and car cover.
It all depends on what look you're after.
If you use Zaino, and not happy with the look, it may be your way of finish polishing as this will bring out the deepest shine.
Or if you want a warmer look, then just switch to wax. It's a PITA to mix the two and maintain it.
I'd try a small panel to test the resulus before going full hog on Zaino/wax combo or switching to just wax or just Zaino.
Always, work on finish polishing techniques as this is your best way to get the look you're after.:buffing: You'll be surprised once you've mastered finish polishing to very high gloss. You'll know you reached it when it looks as if you already have a LSP on it and you also feel adding anything may dull the results.
Regards,
Deanski