My opinion always has been to feel comfortable with your surgeon.
I know there can be a price difference between them, but I wanted to feel comfortable with the person who was about to perform major surgery on me! hehe
Thats my oipinion, I'm sure there's lots of others who wouldn't worry about that part.
So, for a couple of 100 bucks, I would go see another surgeon on your list, just to make an more informed choice.
Re the sleeve v banding.
I agree with you, I think and Im not a Doc, there looks like lots more long term issues with the band. At this stage there less issues with the sleeve.
Although, the sleeve surgery is a lot more major than banding.
I don't regret it at all, should of done it sooner.
Good luck with your research and choice!