What are the kinds of clear coat again? Is it laquer and acrylic? And laquer is the inferior one, correct?

Acrylic Lacquer
Acrylic Enamel
Acrylic Urethane


My Favorites are Acrylic Lacquer, and Acrylic Urethane.

Which is the most durable to UV rays and weather and the like? What should be used on my BMW?

Urethane is the the most technologically advanced paint available and has the best chip/scratch resistance and UV protection. There is a new even better clear that just came out made by DuPont. Its about $12 for a 16oz can and it the best stuff in the industry out of a spray can. You can get some by calling 1-800-548-4321.... the website is www.paintworldinc.com but its so new they dont have it on the site yet.