I'm still undecided on mine... picked up the 2711 for a sweet 850 (CAD) during boxing week, meaning it was 200 less than the acd (1049 edu price in canada, even with our dollar at par or better)... got it yesterday and while I think it is a nice display I'm not sure if the AG is causing my eyes to be sore or if it is the sheer size over my 24.... and the brightness on this thing is crazy, why so bright dell? At least i have a few days to mull it over and see if it gets better or not...
I know some people really don't mind the AG coating found on IPS screens, which is totally fine. That being said, imho if you are making an $850+ investment, you shouldn't have to "get used" to anything. If you don't fall in love with it out of the box, I would strongly recommend returning it for another display you know you'll be happy with.
And if you aren't interested in the Apple LED Cinema Display 27", Samsung is also readying a new 27" 2560x1440 PLS display. From what I understand, PLS displays should be cheaper to manufacture than IPS displays. And I'm praying Samsung won't use the horrible coating that DELL used on the U2711/U3011.