I use an Iwata Silver Jet. Love it. I can listen to music on the radio, even without raising the volume. It is not a powerhouse, and wont give me much over 20 psi when airbrushing, but I ordinarily never use more than that anyway. It didn't even give me that when I first tried it, but putting teflon plumbing tape on all my air connections gave me the 20 (I ordinarily use 15).
It does pulsate at a high frequency, but this does not seem to affect my work. Also, much of what I originally thought was pulsation was just vibration from the compressor carried by way of the hose up to the airbrush :-)