My current setup is my first, so far from my ideal, but I'm very happy with it so far, as it is the first, and I'm enjoying it very much:
Testors mini blue compressor
Aztec a470 airbrush, + variety of nozzles
Home-made, PC fan vented, spraybooth.
My ideal would first to get a dedicated space for my sprayboot first, then go for the ideal equipment.
My friend uses an Iwata compressor and their airbrushes as well, so I guess if I could afford it, I'd probably go for that.