Hi,
Try and get as good as you can afford for a spraygun, only thing is
with A good quality gun they use a lot more cfm,
You need to check the compressor can match the cfm of the gun,
my first gun i had from machine mart, it only needed a 2HP compressor,
and gave good results, i now have devilbiss but it uses a lot of cfm,
and with a 3HP comp it struggles, so match the comp with the gun.
Dave R.