The shutter sound is my number one complaint. I don't find image noise to be a big issue on the gf1 but I usually shoot 800 or less with the pancake. You say the 20 is good but not great, but it's rated better than the x1 in every technical test I've seen... what leads you to say the x1 will be better?
bearing also in mind that, whatever high iso advantage the x1 has in sensor (and i don't think the 1.6 vs 2.0 crop factor is that much of a difference) it loses on the open end of aperture from what I am seeing, so it seems to be a pretty dead heat. The lens review of the x1 at dpreview was not particularly flattering for Leica (again, on the technical charts).
tbh, I really don't think most could pick a comparable print in an abx test between the two cams at least based on the preliminary info available.
What's sad is that if the x1 had shipped when it was meant to - people wouldn't have had the chance to decide not to spend the extra cash for the x1 after picking up a mft cam.
Based on the X1 files available to play with so far yes, the X1 has higher image quality. As to dpreviews lens tests...they are fine but in the end the ultimate image output is what matters and in this case 4/3 is at a big disadvantage because of sensor noise.
I've also noticed that there is more to the electronic image correction in the GF1 than just distortion correction. It can create some "interesting" sharpening effects even in raw. In particular it can render objects with straight lines with an artificial crispness and then leave more complex stuff around it alone. It can make for a strange combination of sharpness and blur. Funny that no tests yet have mentioned this...
This is a conversion from raw via C1 using no sharpening at all. Note the "enhanced" sharpness of the green sign and the wacky variance in the sharpness of the larger red lettering?
This appears at times in photography of people as very sharp buildings and blurry faced people in front of them...
In the shot of the girls the background and foreground are sharper than they are!
I'm not saying the GF1 is a bad camera but it is sure as hell no x1 in image quality and frankly it's not that much better than my Dlux4 other than about 1.5 stops of extra noise supression.
Every review of the x1 has agreed that it's the first truly compact camera to offer pro-level DSLR image quality (handling issues aside).