Nashville
For the last 5 years, when I do not feel like doing the work myself, or for something too complicated, I take my cars to Autohaus on 6th around the corner from Kens (for all you guys out there). Will knows his stuff and has 5 top notch mechanics working for him. I had him replace the clutch and A/C system on my E28, and last week had the trans fluid and filter replaced on the 540i.
Will is a factory trained BMW tech, although I have seen the occasional Porsche and Mercedes in there. They are not running a charity, but for pure competence, these are the guys I trust.
The stone age didn't end for a lack of stones. Neither will the hydrocarbon age......