Sharpe is making a very affordable smooth operating spray gun now that can be had for about a C note. It is the Finex line, easy to use...nice aluminum cup and the easiest gun to clean Ihave ever owned. It is gravity feed...as with any HVLP gun the secret is in the input air supply...volume is the key, larger supply line, gun base will be marked with inlet pressure for the at gun installed regulator you will provide...this is what makes the gun work..the inlet pressure maintain and ensures that the tip is not exceeding 10 PSI per clean air act etc etc...not only will this keep you within EPA regs, it also prevents bounce from the surface from too much pressure.