Hi paul,
I have two airbrushes. One single action Badger 350 which I used for futur and clear coats and a Badger Crescendo 175 which I use for everything else. This airbrush is awesome. It can spray really fine lines yet also cover a massive amount of plastic. This airbrush is extremely simple. Also it's larger than most airbrushes and that's good for me because first, no small parts and second, my hands are the hands of a giant.
The compressor I use is a HomeDepot brand which costs 50$. It has a tank so the airflow is very stable. I added a regulator and a water trap for an additional 50$. This is a very cheap alternative to all those expensive brand name compressors. In my opinion it works just as well.
Hope this helps,