Only use wax?!?!?!, your just sealing all the oxidation and contaminantes into the paint, thats not good. You NEED to do it in steps,
clay bar (once a year)
cleaner wax (every 3 months),
polish; Is what makes the paint REALLY shine it gets rid of small scratches, and other minor surface imperfections, and No most polish won't take clear coat off... MOST POLISHES SAY CLEAR COAT SAFE, IE: Meguiars, Mothers, Turtle Wax, etc. (every 3 months)
wax (whenever you can, or when the paint seems dull, doesn't feel smooth, and the water doesn't bead off.) WAX is just to protect your clear coat, yes it gives it a little shine but the shine really comes from the polish. SO POLISH!
Oh and I use Meguiar's mirror glaze cleaner wax, polish, and yellow wax. It's the best that I have ever used on any wax products, never tried zaino's but I hear they are pretty good.