I understand the variables.
I have been using my MPB 2.16 dual version for editing plus attached to an older Mitsubishi Diamond CRT. I have had numerous problems with calibrating and getting the correct settings.
Wedding photography is hard enough then after you kill your self getting some nice shots,,, you mess up with PP.. can't stand it.
I need a better solution. Either I get another newer good monitor and run it off my MBP or I buy another computer. I just bought a white light for color correction, it helps some..