Let's review shall we?
Originally posted by pcfranchina I am shocked to see how my new K20D underexposes everything. Shots that I can normally get with my K10 or K100 come out dark and unusable with my new K20D. .... I'm really disappointed and shocked people find this acceptable.
So we then pointed out that no, your shot wasn't unexposed; the camera was actually doing a good job protecting your highlights. This is normal.
Originally posted by pcfranchina I agree but think 1/15 is too slow of a shutter speed to get me the better shot.
Maybe, but now we're on the second page of posts, and you still haven't told us how much difference in exposure settings there were between the two cameras.
You also stripped out the EXIF data from the pictures you posted, so we can't see any of your cameras' exposure and parameter settings.
You are asking for advice but not giving nearly enough information to solicit a reasonable opinion. This could all go a lot faster if you would just post the jpegs from each camera with EXIF data, and then we could give you some definitive advice.