I have to give props to anyone who manages to used a 30" monitor. I have been shopping for monitors for a month now for my 8800's. I went to the dell store and played CoDII on their 30" for an hour or two (off and on, had to let others play
) and while it looks AMAZING I found it hard to play, as I actually had to move my head to see from one corner to the other, not much, but enough for it to be distracting. That reason alone prompted me to go with the 24". The graphics will still look amazing, as the 8800's can run 16x AA / 16xAF /HDR all at the same time, and I dont have to give my neck a workout every time I play a game!
That being said, if you feel comftorable with that big of a monitor, and you obviously do as you are going form a 32", then I say get the 30", it is AMAZING!!!