Looking for an Airbrush Compressor, what to look for?

Hi Everyone,

I'm looking to get an airbrush compressor around christmas time or so.

I have a nice Iwata airbrush already, and will be using canned propellent in the meantime.

I see the "cheap" ones on amazon, and the more expensive ones in the shops and I'm not sure if it's worthwhile to save a buck, or just spend the extra $40 (or whatever) and get one that will last.

Do you fine folks have any suggestions?  Small and quiet would be pluses.

Thanks!