time to conder using a higher refresh rate. for example. i was at this insurance guys office one time and after 2 minutes of being there the screen annoyed the hell out of me. i asked him if he uses the comp much and he replied that yes, he does use it a ton, and that he was getting a better machine with a better monitor soon cuz his eyes were killing him.
i asked him if i could change the refresh rate and when he looked at the screen he loves what he saw ( got a nice discout on my insurance while at it )
85-100hz should do you good.
at work we got 23" apple displays and i do recommend them. theyve been a joy to work with so far. except for the fact that they dont scale down resolutions too well. ( meaning that you will be forced to work at 1920x1200 or some other rediculous resolution like that.). working at that resolution slows down opengl acceleration by a whole lot, and its not worth it.