Hi D&T,
Well, you are certainly comparing the Best of the Best for Boston Brain surgeons.
Dr. Black is my dr, as is his protege, Dr. Elizabeth Claus. You can do a Google to see his credentials and the brain tumor research he has done over the years. I have met many of his brain surgery patients in his office and there is nothing but utmost respect for him. Very well published and extremely experienced, not only in brain surgery, but also brain tumor research.
Dr. Barker... again, another Best of the Best around Boston. Many here on this website will attest to Barker's AN performance and are walking testiments to his abilities. FYI... Dr. Barker will be a presenter at the ANA Symposium in Philly next month and I'm looking forward to his talks. On this site, Crazykat (Paul), KBonner, jcinma and many others can first-hand attest to the wonderful work he does.
I have to admit... a true toss up.... either way, you certainly have top notch to choose from..... great choices!
Phyl