my early impressions of the M9 are not making me reach for my wallet.
Me too, except in my case it's the price plus early memories of the M8 (not to mention my experiences with an early M7) that are holding me back. The price is close to 1.5X what I paid for my M8 new, and nobody can convince me it won't drop in a similar manner when (not if) Leica rolls out an M10 in another 3 years. Also, if the M9 proves to be bug-free from the get-go, it will be the first Leica camera to do so in a long time.
A one-stop improvement in high-ISO sensor noise might be a huge thing to some people, but to me who has only rarely cranked the M8 to 640, and mostly shoots 160 (which is the base of the M9 BTW, the 80 is a "pull" similar to the "LO" setting on my Canon), it's not a huge thing.
Full-frame likewise is a huge thing to some, but not to me. I have lenses down to 12mm (18mm effective on the M8). Unlike a cropped DSLR, the M8 doesn't have a squinty tunnel viewfinder. And I'm more of a tele guy than a wide angle guy anyhow.
The IR filters I still think are an embarrassing band-aid on the M8, but they work. I always did and always will keep a filter on my lenses permanently for protection anyway.
Do I want an M9? Well, if it doesn't turn out to have any major undiscovered bugs or they get worked out, then sure. But I can wait as long as it takes to get a factory demo and put the saved thousands to better use.
I am really enjoying a break from rangefinders. A 70-200 Nikon zoom wow! Its a great new toy! Also Nikon 14-24 stunning optic on a D700. Both of these optics are not possible with rangefinders so my images are different and its quite refreshing.
Truth be told, unlike some who say they shelved their DSLR after getting an M8, I've continued to use mine as much or more than my M8. Other than for ease of travel (which I haven't been doing as much of in the past couple years) I have always liked reflexes better. Which is another reason putting $7K more into Leicas is not making a lot of sense to me.