John,
Most people use double action (push down pull back) airbrushes. I prefer to use a single action Badger 200G Gravity feed with fine head. With the correct air pressure and thinness of paint I can spray as thin a line as any double action brush. It all comes down to what you're comfortable with. One mans junk is another mans treasure.
I'm sure the guys on here will be able to point you in the right direction.
Good luck & enjoy!
Bob
