You can check out M1 Autobody in El Monte, CA. They do a lot of show cars. You've probably seen their sticker everywhere if you have been to SEMA. Check out their site.
One guy even brought his car all the way from florida to get his BMW painted. They also win a lot of best paint awards. If you do check it out. Ask for a guy named Jon and said Eric referred you. They do a lot of "ricey" cars, but the paint is good, and they also offer warranty on their paint.