Honestly, I would give them both a chance. Do interviews and tours both places, and see how you feel about both. Ask hard questions, and see if you're pleased how straight forward their answers are.
I chose Bay Area for babe 2 and now for #3, and have been very pleased and not found them "med-wifey" any more than SB. Their c-section rates are very comparable, and they transfer for the same reasons. The transfer rate at BAM happens to be higher partly because they have the contract with AAMC to care for Spanish-speaking Medicare patients, many of whom come to them not out of a commitment to natural birth, but because it's their only option. To still have a comparable c-section rate with SB even with many of those patients is, in my opinion, very commendable.
Don't be afraid to ask he BAM ladies why they have the reputation on MDC for being more med-wifey. I asked on my last visit, and it was enlightening
In addition, two other things swayed me away from SB:
1. First, their male-midwife David. I'm sure he is a very nice man and I've heard he does a wonderful job, but personally I am NOT interested in having a male support person anywhere near me while I'm naked and in pain. When I get ready to push, the world could show up, for all I care
I'm totally in a zone by then and don't care who is there for pushing and delivery. Ina May Gaskin's book even makes the point that having an unrelated male in the room while a woman is laboring definitely has the potential to slow a labor down (modesty kicks in and can cause dilation to go backwards), and I know myself well enough that this would be the case for me. (Obviously others may not care a hoot about him being a male, but for me personally, this was a deal-breaker.)
2. Much better back-up docs at BAM. SB uses Annapolis Ob-Gyn, who have high c-section and intervention rates, not to mention it being a huge practice. In the last few months, BAM has switched their back-ups to the two Ob-Gyn hospitalists at AAMC, and from what I was told two visits ago, they are SO happy with these two docs. Both are quite laid back about a lot of birthing practices and are NOT quick to intervene or section. The female hospitalist (don't know her name), especially, practices much more like a midwife (she's a DO, which may explain her positive views of birth) and is very, very supportive of VBAC. This switch has raised BAM's VBAC success rate.
Just my two cents.