Harbor freight has a HVLP gun on sale for $33(normal price - $65). I have not used this gun however, I hear it is pretty good.
It is a top loader & comes w/a 1.4 nozzle & a at the gun pressure regulator.

I Have a Sata 2000 which I paid over $400 for,so a gun for $33 is almost unbelievable. I ordered one just to see if it is any good. I also ordered a 2.2 nozzle so I can use the gun for primer.

I also have a top loader Sharp which I do not recommend. I currently am using a Binks model 7 for primer.