Also look at the Badger 150 pro http://www.dickblick.com/zz250/02b/ . It's a little more money, but a lot more AB. I was given an old one which needed more replacement parts than it was worth, so I picked up a new one last Friday. Very sweet! The double action gives you an impressive amount of control OOB and I'm an airbrush newbie. I've yet to touch paint to a model (which one do I ruin first? LOL) but I can already spray pencil thin lines, small dots and sign my name!
edit By a lot more AB, I mean than the 350, I looked very hard at the 155, but decided on the 150 as I had already bought a new needle, tip and head for the used one... The 155 is a very nice model! /edit