B2,
I come from a different background. I was a Leica RF/Nikon SLR user back when I was a full time photojournalist. At one point I needed more SLR equipment and sold my Leica kit.
Twenty years later (as in right now) I am using Canon DSLR full frame equipment and stumbled across the R-D1s. Wow. It is much more enoyable to use for my everyday shooting and I am culling some of my huge Canon kit. I like the ergonomics, even thumbing the "advance" to cock the shutter (pretty quiet camera).
Let's talk image quality. I have a Canon 1Dsmk2 and the image quality is unbelieveably good and far superior to the R-D1s. However I am working on a big print project for my employer and I will be using a few R-D1s images in the publication because the IQ is good enough for a color/newsprint insert publication. Bottom line the image quality could be better but given that the sensor is showing its age, one can't complain too much unless you need consistantly larger than A3 print sizes.
Service - My Epson is only six or so weeks old - no problems with it at all and I bought it used. It is built tougher than it looks and while obviously some bodies had issues, the same is true of the M8. I feel in the future some repair firms will establish themselves for Epson models and from some of the earlier posts on this thread it sounds like there may be some already.
Digital workflow - the workflow from a digital RF is different than my Canon. Once you learn it, good results are predictable and if you frame very carefully with no cropping, the results are often outstanding.
Glass - buy the best glass you can afford, period.
I will own some sort of digital SLR and digital RF for the rest of my life. If I ever give up a system, it will be the DSLR. Right now the RF is the R-D1s. If I continue to like the digital RF I may eventually move to the Leica just for the better IQ. But who knows, perhaps Zeiss, Bressa, Nikon or some other company might enter into the digital rangefinder realm sometime in the not too distant future with another alternative body?
BTW, for some of my R-D1s images - click to my R-D1s web site
gallery.
It is a tough choice... best of luck with it.
O.C.