Originally posted by Marc Sabatella IQ-wise, virtually *all* DSLR's are the same unless you're pixel peeping at 100%.
In my experience this is untrue. The CCD sensor of my K10D and the CMOS sensor of my K-7 have different IQ's. In most cases I can tell what camera I used to take the photo just by looking at the image (and not at 100%). One isn't worse than the other by any stretch, but they are different.
That being said, the OP's question is a valid one.
I have never used the K20, but have logged about 40K exposures on my K-7 since purchase - ergonomically it is a better camera (K10 and K20 are the same - so I draw from my K10 experience), as well as viewfinder coverage, white balance, metering, almost silent shutter, much improved lcd, much faster AF, video, etc., etc.
The price disparity is no longer there between the K20 and K-7 now, so I don't really see much point in getting a K20 anymore.
c[_]