Panasonic GH2 or new Ricoh GXR with A-12 Leica M mount

One of my pals asked me which I thought was better: the Panasonic GH2 or the new GXR A-12 with M-mount. I own the GH2 and tested the GXR / A-12 at a camera show recently.

Here were my thoughts:

GXR or a Panasonic is a hard question, I think....

If you were only to put Leica lenses on it, I think the GXR is better:

 + Lower crop factor (1.6x  vs.  2.0x) and bigger sensor

 + Better manual focusing options

 + Ability to code EXIF data to custom lenses

 - The eye-level viewfinder  was good but not *great*

If you wanted to use the Panasonic / Leica DG lenses as well as others then the Panasonic is better:

 + Much broader supply of auto-focus, auto-aperture Microfourthirds lenses from Panasonic, Olympus, and Leica

 + Ability to mount many more types of lenses (Nikon F, Pentax K, Leica R, C-Mount, original Olympus Pen, etc.)

 + More body options (GH2, G, GF3)

 + GH2 eye-level finder is very good (but not great).

I was also really impressed by the Fuji X100 viewfinder but I want it with an M mount rather than a fixed lens.
I was not so impressed with the Sony NEX but there are many people who like them.
The new Nikon 1 is a failure, I think. The Pentax mini series has some nice 'toy' features.

As for used camera lenses, in USA: KEH camera and B&H camera are the best.

In Japan, my favorites are Camera Alps in Shinjuku and Fujiya in Nakano.

Karen