furcafe
Veteran
FWIW, I bought the M6 TTL 0.85 specifically to use the built-in meter when shooting in tricky available darkness situations (the TTL's meter is also a stop or 2 more sensitive than that in the M6 "Classic"). If you're doing fine w/an external meter, then I agree that there is no need to go beyond the M3. You mentioned "the audience" seeing your camera, so perhaps you're shooting in the theatre, etc., where lighting is more predictable.
I did get the flare-reduction parts installed in my M6 by DAG because it was a significantly annoying problem in the sort of conditions I usually shoot in (indeed, even the M2 & M4 RF patches can experience "white out," just not as often as the late M4-2, M4-P, & M6). However, I have never had a problem w/the reversed shutter speed dial of the M6 TTL & prefer it for my shooting style (1 reason why the MP has little attraction to me). Unlike when I use metered cameras, I rarely turn the shutter speed dial while looking through my old meterless bodies (I meter & change settings beforehand).
I did get the flare-reduction parts installed in my M6 by DAG because it was a significantly annoying problem in the sort of conditions I usually shoot in (indeed, even the M2 & M4 RF patches can experience "white out," just not as often as the late M4-2, M4-P, & M6). However, I have never had a problem w/the reversed shutter speed dial of the M6 TTL & prefer it for my shooting style (1 reason why the MP has little attraction to me). Unlike when I use metered cameras, I rarely turn the shutter speed dial while looking through my old meterless bodies (I meter & change settings beforehand).