It's difficult for most individuals to compare endodontists because it is unusual to see more than one. I've seen two. I've only used Bronson. I went back to him because I was confident he could handle a difficult tooth. The other endodonist said he might not succeed with the the root canal due to ossification and the small size of the tooth. Although practicing for many years, this endodontist didn't seem confident that he could do it.
Bronson also saw the tooth as a challenge and had momentary difficulty with it, but then quickly succeeded. Bronson is extremely fast and efficient. He may seem abrupt. But, I think he just has an iconoclastic attitude. You can challenge him and he will respond respectfully.
Bronson's no social worker. But, I strongly recommend him for endodonic work. I found him very, very good.