I have a Samsung Syncmaster 213T, which is no longer made, but which was somewhere around $700 when I got it. It has been terrific for me and calibrates well. If I had to buy a new one, I would definitely look at Samsungs that are in the under $1000 range.
I should add that I use mine mostly for PhotoShop, and I do not do any gaming, so I don't know how it would be for that.