MAG does do the German cars right, but as long as someone knows the proper technique its not a big deal.
I had one done at MAG and yeah they weight the driver passenger and trunk with ballasts, but theyre also a little over 100 IIRC. Would be worth it to go anywhere else if the person doing it knows thier shit.
Another reccomendation I have would be ET Paul downtown. They are a bunch of great guys too, though ive only had mount and balances done there. They seem to do a lot of high end stuff, from what I could tell. (dont know what machine they have)
And to the mention of North End Wrench. Also a pleasure to do business with. If there is EVER anything I cannot tackle myself, they will always get my business. Theyre also avid autX'ers and know thier alignments im sure