As far brushes, I use badger and Iwata. I've been very happy with these brands although I don't recall the model numbers I use. Like every body is saying, get a "real" compressor with good sized tanks.
Another place you may want to try out as far as purchasing an airbrush is Dixiart. They have really good prices and I know alot of people that do T-Shirt Airbrushing and such that always use them for their supplies.