My main computer operates both a Samsung 275T main display and a Viewsonic VX2235 monitor either side of the main display. When dragging images between the screens, there is a very noticeable difference in colour quality between them - the 275T is far 'nicer'. Whilst these screens are not calibrated (and this may make the cheaper Viewsonics better) I certainly would never use a cheaper panel for photo editing ever again.
But that's just my $0.02.
