Right now I’m rocking a Harder&Steenback Infinity CR+ with a 0.2 nozzle. I think it’s a very decent airbrush. The nozzle is pretty narrow and clogs like crazy if you’re not careful. But I like to work with very diluted paint anyway, so I don’t mind.
As for the compressor, I own a custom built unit made of a fridge compressor. I set it to roughly 25 psi, then I use a valve on my airbrush to adjust the pressure to my needs.