Looking for recommendations on the best service providers in the DC area.

I have done my own maintenance on my VW TDIs for 15 years with assistance form a few gurus when needed. Just purchased a 2014 328dx and looking for your recommendation on the best service gurus in the area if needed. I plan on purchasing the software and any BMW specific tools.

Thanks for your assistance.

BMWDieselGeek
2014 328dX