I picked up a
Contours II HVLP gun from Eastwood 2 years ago and have had great results. I painted my sons Honda Civic SI with black base/clearcoat and the paint went on truly amazing. The best part is it uses about 5 CFM. I painted the car using a old 2HP Sears compressor with a 20 gallon tank rated at 7.8 CFM @90 lbs. never once ran out of air.
One recommendation I have is to buy a new airline and dedicate that to spraying only. I found out the hard way when I thought I was getting water in the paint (I had two water filters and a final desiccant filter at the gun) only to find that it was debris from the old hose I was using.