Datacolor User to User Support Group.

Well, theoretical discussions aside I figured out the solution that
works for me for the time being.

The problem was the white point in my case. For LCD native wp is
recommended and the monitors had different ones. I actually think it
has something to do with Nvidia DVI screwup, not the monitors
themselves, but anyway...

I decided to leave the "better" monitor at native, then measured it's
white point (6375K - you need to start calibration at a white point
other than Native to get to the measurments part) and then set it as a
target for the second monitor. So now they are much closer. The
software warned me that it's not a good idea to use RGB sliders on an
LCD monitor - but hey, it's not a good idea to work on monitors with
different white points either.