So I talked to one of the BMWCCA technical advisors today about my clicking. He owns an independent shop and hasn't really worked on S65 engines yet, but he did say that if I have a rod or main bearing issue, it would be a lot more obvious than subtle ticking. I remember the E46 bearing issue (a buddy had one with the issue), and those cars sounded horrible at all engine speeds when the bearings failed... like really loud knocking. So I feel a little better. I'm still dying to hear what your dealerships say.
2011 M3 Sedan / Space Gray / 6MT / Few Frills / Low Weight / Lots of Fun