Thought about doing the M8 (have a M6TTL and a M3). RF shooting is a different experience for me, compared to SLR shooting. I find myself using the DOF scale much more. Using DOF to carry me through in the shooting.
When using single focal lengths (used to have the Tri-Elmar [28-35-50]), it causes me to think more when I come upon a situation, when I shoot with the M's.
I also love the "stealth" factor that RF shooting allows.
I need to take my M6TTL out more, but digital is so easy compared to film. Being able to choose the right ISO. When shooting RAW+JPEG - being able to go back to color if B&W was my first choice. Being able to see the exposure results right away.
But what is missing is the anticipation of how my choices went, while I wait for the film to be developed.