I've used Zaino exclusively and it has always been my top choice. During the warmer months, most Saturdays you could find me applying at least 2 coats of the polish in my parent's driveway. Once you learn how to apply the polish it's all uphill from there. The more coats you apply, the deeper the shine gets and with the accelerator there is minimal waiting to reapply another coat.
I once was pulled over by a Sherrif and when I asked what I had done, he said nothing but he had to find out what I used on my car to make it shine like it did at night. He said he had never seen a car that was so clean or shined like that. It was hilarious.
Once you've built up the layers, nothing sticks to the car. Everything rolls right off or wipes off. I just purchased my 2011 IS 350 a couple weeks ago and Saturday I am spending Saturday Zainoing my car. I can't wait!!