single stage 5hp compressor w/ a desiccant dryer and a filter at the gun. I use shoot with a DeVilbiss Plus GFG670 w/ a 1.3
just choose your gun based on your compressor, HVLP guns are nice, but it is tough to keep up with the CFM they need to spray well continuously at 10-14psi. A compliant gun like my plus gun will spray at a higher pressure (like 30-40psi) but doesn't use as much air.