Any particular reason why you want a single action over a double action?
Irregardless...I know some here have "hobby" compressors which are manufactured by Paasche,Badger just to name a few...Others go and get C&H's from wally world...The best thing I can suggest is buy the best your budget allows! I also am looking for a new compressor but havent made a decision on one yet.
Check out the combos and items on this site:
http://www.airbrushcity.com/
Also look throughout the forums for posts various people have made concerning various airbrushes and compressors!