Best character: Leonard H. McCoy, MD, CMO of the USS Enterprise (no bloody A, B, C or D)
Best medical doctor: Dr. Katherine Pulaski, CMO of the USS Enterprise-D
I'd rather have McCoy as a friend, but I'd much rather have Pulaski working to keep me alive.
EMH = a computer program, no heart
Bashir = genetically engineered know-it-all, also no heart
Crusher = who? Oh yeah, that chick with a crush on the Captain
Flox = maybe... in a pinch