i've tried the MP, M7, M6 and the M6Titan. Of the 3, the MP shutter is seriously silent, as with the M6Titan. The M7 is close but still quite a bit louder. The M6 is the worst of the lot if u ask me. So i guess some of us might want an MP for that purpose. That said, given a choice, i'd pick the M7 for the AE. Haha, i'm a lazy photographer like szennyboy.