S,
Over 7 years ago I bought my MM. 7 years later it is still a great camera. Had the sensor replaced, and at the same time got an overhaul: both for free.
I know the M-246 is a more advanced camera in every way, but the MM still has its charm warts and all.
The only two things it has over a M-246 is its unique rendering (CCD) and to me a better midrange that allows it to transcend formats so that large prints look like medium format and at times with the perfect image capture and clean file even like large format.
BTW I remember the critics from 7 years ago. One poster her on RFF said, "Building a monochrome camera is dumb."
Also know because so many have reacted strongly to hating that mentioned screw, I now have the opinion that I like it a lot. LOL. Makes me want to buy the camera, which I find to be funny.
Cal