Looking for adivice on an air compressor

[Alvin]

Finally have money to go buy an air compressor and since I have no idea what to look for, thought I'd ask you guys. I'm looking at tank sizes from 20-30 gallon, and mainly 6hp motors. I'm planning on doing some sand blasting, some die grinder work, and some painting with it. Mostly chassis work, not body panels. Any recommendation on which brand to buy? Looked at craftsman and campbell-hausfield or whatever. Also have a coleman at work. Thanks for any feedback.