Skip, welcome! Glad you're here....and thanks for your question about compressors.
Remember.....on the FSM forums......THERE ARE NO STUPID QUESTIONS. Never. EVER. The ONLY stupid question is the one you DON'T ASK! We're all here to learn, and to help. Always.
I use a Bostitch 150psi compressor with a 6 gallon holding tank (about $300 - came with several air tools, and a garage sized air line). This is VERY IMPORTANT....a "holding tank" is a tank that the compressor assembly "charges" with pressurized air. And then, whatever tool you attatch draws off the smooth, even pressurized charge, not the "pulse" of the direct compressor piston (which will wreck 99 out of 100 painting schemes)....just a, smooth, even flow, not a puff-puff-puff flow. This is important....very.
It has an integral air pressure regulator (VERY handy). A little noisy, filling the tank, but you can spray at 15-20 PSI for a LONG time before the compressor kicks in to refill the tank.
Using industrial quick disconnect fittings, I attached a water trap, reducing fittings (quite inexpensive) that go from industrial threads to airbrush style threads. Next, a ball valve (basically an "on-off" switch"), then a 10' Badger braided flexible hose, then quick disconnect fittings (search Amazon for "airbrush quick disconnect fittings"....SUPER cheap), which means it's a simple 1/2 second switch-out for any of the three aurbrushes I use.
Seriously...a constant pressure flow (rather than the puff-puff-puff of a direct feed compressor) will make your life MUCH easier. Trust me.....I figured this out after YEARS of suffering with sub-standard tools.
For the gradual modifications that made it "perfect"....yeah - I'd spend the money again - in a heartbeat.
Good luck!