I am one of the people that gave in to buying the M9. Just got mine 2 days ago, and I'm off on an exciting journey. I can tell you, though, its not what I had expected.
Here are a few thoughts...
At first sight I was just a bit disappointed. A camera twice the price of a new MP should look and feel twice as good. Well, it doesn't !
Firstly, the paint- somehow the chrome on the M6 is more classy looking. In fact, the finish on my earlier M2 is better than anything else.
Secondly, though larger, does not feel as 'dense' as the M6/P etc. Not quite'boggy', mind you, just not quite as solid !
( I wondered if I had done the right thing, buying it)
But two days of fiddling with it, and using it, I'm a convert ! It now feels fabulous, and the concern about the comparative feel of the other M bodies, gently fading.
Most importantly, it produces phenomenal images ! And the debate - whether it replaces/competes/makes redundant film bodies - seems to have resolved. It complements !!
This should allow me to sell the excess film gear I own, so I can limit myself to a couple of M bodies, and a few choice lenses.
One thing that I found very useful was that I could 'test' and compare lenses ( and decide which ones to sell) much easier, as the proof of their performance is immediate. That is much easier to manage than the patently waiting to get the results on film, and then hoping that the differences between lenses was not some inadvertent change in the workflow from shooting to comparing.
And finally, the instant feedback is not really instant, since shooting in RAW, and looking at it on that not-so-great screen tells you little about what the final image could look like. This allows me to be more diligent in applying the settings and double-checking them, and then shooting carefully. And then, waiting to get home to review and 'process' the images. Almost like film !
I'm having a great time, and this is only the third day I've had it !
Here's one of the first pictures I took...