As a matter of passing interest - passing because it isn't going to result in a purchase - did you find that M-type cameras made you feel any different about your photography, or did it all end up as part of the usual GAS thing where after the first shoot with it, you found yourself right back in square #1?
The first serious camera I learned how to use (c. 1970) was my dad's M2. Rangefinders are the type of camera I still feel most comfortable with. Doesn't have to be a Leica so long as I can focus accurately and relatively quickly with it. The first SLR I had was a Canon AE-1, which I bought with a 50/1.4 lens to take on my Middle East voyage 1983–85. After that I went back to the M2, adding a few Zeiss (Contax) RFs along the way. Around 2000 I got a used Contax Aria SLR and used that, with various lenses, along with the RFs 'til the Canon 10D came out in 2003. Nothing fancy lens-wise pre-digital: 28–135mm range, though I did (and do) have a Zeiss 21/4.5 for the Contax RFs.
In the digital era I've experimented with all kinds of stuff, including an Epson R-D1 RF, but this past year I've returned to the Leicas. Ms aren't everyone's cuppa: I think you either gel with 'em or you don't. To me everything about them is second nature. Simple controls, muscle memory. The results with the M8s and M9 are no more film-like than with any other sensor-based camera, but I really enjoy using them. With SLRs, and even EVF-equipped mirrorless stuff, I always feel the urge to use longer lenses, get more reach. With an RF even a 90mm lens feels
long to me because its frame in the viewfinder is so small. Dunno if the pics I take are any "better" but I certainly enjoy the process of taking them more. And for me the process, the doing of it, is primary.
-Dave-