This is interesting reading. I recently built a computer for home using an 8-bit Viewsonic VA2855SMH monitor and an EVGA GTX560 1GB card. This computer is causing me eyestrain whereas the same setup with a crappy old Asus GT 610 card doesn't.
@Gurm - did you adjust to the EVGA card in the end? I would love to test an MSI GTX 560 for example, but the problem is the process of testing this 'just to see' can lead me to having a migraine for several days! This is what stops me experimenting too much as I just can't handle them any more.
I think I'll pick up an MSI 750ti to see if that changes things..