Oh, I don't know, I always thought Dr. Pulaski was underrated. She was one of the few people on board the Enterprise who could truly stand up to Picard. Picard, for his part, seemed more afraid of her than of the Romulans. Plus, I always liked Diana Muldour.
I really got to like Crusher as TNG
progressed. The relationship between her and the Captain was far more interesting than being Wesley's mother. Plus she is seriously attractive. She would be the doctor I would want to treat me if I had to choose between them.
Bashir is just too obnoxious to be likeable. Kind of like Dr. Ehrlich (remember him?) played by Tom Cruse.
Call me old fashioned, I just don't think I could have a professional relationship with a hologram, and Dr. Phlox, I must confess, I just don't know that well yet.
But still, my favorite of all the Star Trek Docs has got to be Bones McCoy. The original and still the best. "I'm a doctor, not a bricklayer"