Hi Ben,
I was at an S.F. performance of M5 with Bernstein/VPO, which I thought was quite a bit more exciting than than the performance DG ending up using from Frankfurt. There were some mistakes, though. I also saw Bernstein/VPO do M6 at Carnegie Hall. My friend, David Hurwitz, saw the N.Y.P.O. performances of M2, M3, and M7. Needless to say, he thought that they were quite great.
To the best of my knowledge, none of those performances were video taped. But who knows? As you probably know, Bernstein was tentatively scheduled to do M8 in Amsterdam. That would have been quite something, I'm sure.
Barry