I am planning to buy either a Socata TB21 or Bonanza sometime next year and looking for reputable A&P local to the bay area who is reputable to do pre-buy inspections and future maintenance.
I don't know about the Socata, but I believe that Brian Stout at Fly S on KRHV has a lot of Bonanza experience. I am up in the north bay (O69) and work with Mangon Aircraft on pre-purchase consulting. I know Bonanza's fairly well, though not the Socata. I think others at Mangon may have a bit of experience with them, but as you know they are not so common. Send me a PM if you want my contact information.
What model Bonanza are you interested in? I have flown every model from the C model on up in the 35's and most or all of the Debbies. Most of my time is in the 36 series.