Without question, I've tried 'em all, Zaino Bros. You have to buy it online at zainobros.com To do it right it is a three step process but it all comes off fairly easy but has an awesome shine that lasts.

 

I have to agree. I have used Zaino on the last three vehicles I have driven and the durability is unmatched. I go about 6 months between applications (except on the Corvette) and I only hand wash with Zaino car wash. If you avoid automatic car washes and harsh detergents Zaino would easily last a year under normal conditions here in Central Texas.