I bought the Sony RX-1r while I was waiting for the new M. Having finally got the M and having used it for a month or so, I am not even considering the Sony A7 now - even though image quality (judging by the RX-1r) will probably be comparable or higher than the M (and very likely better than the M at higher ISOs), I am just no so keen on the ergonomics of these small cameras, the little buttons, menus, electronic finders. I am in fact selling the RX-1r right now and plan to be happily using the M (and the S2) for quite some time.