M8 files take a lot more efforts to get right tone - maybr that is just me, otherwise is the best of thr three.. M9 won't beat it.
R-D1 raw processed with EPSON RAW software, produces classic color, I always wish M9 has such JPG color profile, as an option there (I might use it most), the best part EPSON has done there.
GXR plus M mount, it is the best digital back for certain lens, i.e. Super Angulon 21/4 and 21/3.4.
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