Value for money, it's hard to beat an Aztek. I use them all the time. The best thing about them is the airbrush body is sealed. You simply remove the entire nozzle assembly and dump it in solvent to clean it. Paint never enters the airbrush itself. It comes with all the paint cups you'll need, plus a selection of nozzles for different purposes: Fine, standard, hi-flow, spatter, etc. They usually come with an instructional video as well.
Great all rounder. Should be ableto pick one up pretty cheap from Ebay.
This is the 4709 kit: http://www.hobbiesguinea.com/images/AZK4709.jpg
If you're buying a compressor, make sure you get one with a reservoir (air tank or receiver) on it. A regulator/moisture trap is essential as well.
Hope this helps,
Karl