Having bought a user M8 a couple of weeks ago...
Aside from some simple point and shoots, I waited a long time to go digital. Frankly, until the past 1-2 years I thought most (not all) digital was pretty dismal. Worse, all the digital SLRs I played with are so darned complicated. 50,000 point AF / multi-dimensional evalu-logistical metering / super-time-warp AF....whatever.
With all the digital SLRs I spent so much time playing around with stupid functions I didn't need that I didn't spend enough time trying to take photos. Heck, at least 1/2 the time I got so frustrated with these digital computers trying to think for me, for a while I quit taking photos altogether for the better part of the past few years. I stuck my head in the sand and went away. The bad part was that I love photography and I truly missed it.
I totally blew off the M8, up until I saw a used one in a camera store. No AF, no multi-point anything, just manual and AE. I can use all of the lenses for the M2 my dad handed down to me 20 years ago. I talked to 2-3 guys shooting 8s and 9s. I checked out the images people were making with them online. I saw some digital prints. Holy crap! These M8/M9 things are good! Leica made a CAMERA, not just another $5000 hand-held gizmo-computer. I actually get to be a photographer again.
So I bought a user M8. As I posted elsewhere on the forum, aside from the full-frame sensor, there isn't anything on the 9 I can even remotely justify. To be truthful, I was really worried about the crop factor. So I bought a 28 and I actually can't believe how happy I am with the camera. Aside from having to think about lenses a little differently, I don't see the crop factor as a big deal at all. In fact, even when I eventually buy an M9 (or 10, or 11) I'll keep the 8 because of the crop factor for portraits and tele work.
Sure the 8 has its limitations. But who cares!! Its the first digital camera I've seen that let's me be the photographer. I could care less about paint vs chrome, leather vs vulcanite, or kinda-quiet vs really-really-reall quiet. Take your M8 out. Use the hell out of it. Beat it up. Send it back to Leica for a CLA as brassy as those old M4s we love to see photos of. Take photos!! LOTS of them. Photography is back!!