A closely related and really important is question is how do you tell who's better?
I'm sure there's big differences, its the nature of people that some are better than others, but can we tell who's who?
Some people interview their surgeons and go with who they are comfortable with. I personally don't like that because I'm not interested in their personality, and I don't feel capable of evaluating their answers properly.
I favor doing a lot of research, but that's kind of my strong point so I guess I would.