I could have voted for all options!
M8 - I have one, love it, is by my side right now. I'm about to sell it (see below).
M8.2 - I've just bought one! Well...a fully upgraded M8, so same thing minus the dot color! Chose to upgrade for the quieter shutter, nothing more.
M9 - It's evolution, not revolution. The extra resolution is welcome, but I'm actually not too fussed about full frame. 1.3x provides a really enticing 32mm, 37mm, 45mm, 66mm (equivalent) FOV grouping, perfect for the 'normal' focal length lovers (M9 only provides two focal lengths 30<x<70, M8 has four).
R-D1 - I've owned two, about to sell the remaining one to fund the difference in values in the above two. Probably the best shooting experience of DRFs. Great big viewfinder, great ISO/shutter/AE/exp comp dial, great shutter/wind feel.
R-D1s - Have upgraded firmware on above, heard some things about improved vignetting prevention.
R-D1x - exciting because it's a new Epson RF! Fingers crossed a feeler for a version with improved sensor in the future!