John,
For me, the Iwata Revolution is an entry-level double action airbrush that is the best in its class, IMHO. You can get one from
Dixie Art & Airbrush Supplies Home Page: Airbrush and art supplies for about $65.00.They also have adjustable pressure compressors with water trap available. Easy to use, easy to clean, and very fine lines with properly thinned (2 or 3 parts thinner to 1 part paint) paints. I use Xtracolor for the most part, but I'm not fanatic!
The thing is, everyone has his own "favourite" airbrush/compressor/paint/thinner/pressure combination, depending on all sorts of variables, from what paint is used to how high above sea level you are. If you know modellers in the NY area, ask them about their favourites: they'll know the market, and what works best in The Big Apple.
Good luck with your hunt!
