Physical Medicine & Rehabilitation.  If you do a search on here there have been numerous threads devoted to salary, job outlook, pain fellowships, etc.  Some people on here have matched into it I know.  From what I remember it was more than FP or IM, less than most specialists (cardio, etc.), very similar to Neuro.  With a pain fellowship you make what an anesth does with the same fellowship-that is good money.