Yeah one the amusing things about all the M-users insisting on full-frame is why? It's a rangefinder, it's not like the finder is smaller or worse because it is independent of sensor size. Compared to the SLR-users, the only thing pushing for full-frame on the RF was that a larger sensor usually means higher image quality. But I don't need ultimate image quality (or I'd be using 8x10 or a 60mp MFDB).
Say "ultimate image resolution". You have an excess of image quality as it is.
I think, although I don't know, that folks complain about the crop on the M8 when they have a film M as well, and switch lenses between them. The inconsistency is an issue, as well as the strong need for the UV cut filter when they're on the M8, but not needing them when they're on a different M. I'm just guessing, of course.
I love my M8, but I do regret losing some shots to ghosting because of the UV cut filter. That's the only real problem I have with it: it likely has bigger problems with me.
The X1 manual focusing is not good, and the AF is very slow, and will be even slower in the low-light you want to shoot. And with the X100 coming out, with a faster lens and half the price, I certainly wouldn't buy one now, in any case. There's a firmware update for it coming soon, I hear, but who knows how much that fixes things.
I'd wait for the X100, and would expect the choice to be between that and the M8.