Not exactly S Bay but I use Peter Pan BMW in San Mateo. I used to use Allsion but they're too big and the last service advisor I had there knew less than my 12 yr old daughter did about my 540 6spd!!!!at the time... So, no M5 to Allison. They also gave the story about "give us a deposit and we'll get you a car in 12 months" (sticker +$10K) when I was looking last year.