I've been looking around for information about suitable high end smal spray guns for modelling, and came across some interesting videos by mr
Paul Budzik, posted on the Tube. I feel the normal airbrush I got generally is too small for e.g a Tamiya truck cab, and it's difficult getting great results with the rattle cans..Seams that IWATA RG3, LPH 50 or 80 are some good choices if one want a proffesional gun.
https://www.youtube.com/watch?v=u6gI9ljJsdo