I am using Metalux paint (I guess it is PPG's budget paint?). I'm pretty much a rookie, but it seemed to go on just fine. One thing I learned, I should mix up the clear coat in batches instead of all at once. At the end it started to not flow too well.
I have a 29 gallon, 14 CFM@90 psi compressor. Seemed to keep up fine. I bought the Devillbiss Starting Line gun kit (Devillbiss's budget guns?).