How important is image quality?
A lot of the time, I suggest, the answer is "Not very". Only very, very rarely do I need the kind of quality I can get from (say) my 75 Summicron on my M9.
To me, it's a lot more important that my Leicas are (relatively) small and light and (for me) extremely easy and pleasant to use. Conversely, I get no pleasure at all from trying to use a camera the size of a cigarette packet with a screen on the back.
It comes back yet again to the 'quality threshold'. Once a camera delivers results that are 'good enough', then they're, well, good enough. My old Pentax SV with its 50/1.4 is 'good enough'. After that, for me, it's usually down to how happy I am using the camera: to how easily I can use it to get the pictures I want. If I want the ultimate in quality, after all, I can always switch to a bigger format. All the stuff about 'Leica glass' is usually irrelevant.
Who else feels the same way?