http://cgi.ebay.com/ebaymotors/ATD-10-Piece-AVLP-Spray-Gun-Set-for-auto-paint-New_W0QQcmdZViewItemQQcategoryZ43987QQihZ002QQitemZ4616402519QQrdZ1QQsspagenameZWD1V
This brand is a cheap yet a good copy of a SATA style gun...most paint auto paint supply stores have or will get them for you...I have 2 sata and 3 devilbiss guns...these spray just as good when set up correctly...just dont last as long... A good sata is 500 bones or so...you are correct about the idea of having a gun for different paints...if you dont want to spend as much money from the start, get a primer gun and a paint gun...get the tip on the primer gun big as you can...say a 2.0...most primer surfacers are thick, the large tip helps. Its sucks to not have a gun clean enough and a flake of metallic fly out in your clearcoat...if you have a gun devoted to clear this will not happen. If local laws permit stay away from hvlp guns, they never spray as slick unless you have a very high dollar setup...due to the lower air pressure not atomizing the paint as well as a hi pressure gun.. you do not need heat lamps if you use paint entended to air dry...most are dry to tough in 4hrs...you can speed this to a hr or so if you wanted to but I like slow drying paints, they flow out or slick out better with the slow dry times...Just my .02 ....p.s. i do paint cars, and have my own booth at home...for what it is worth..hope this helps..Aaron