For those on the fence, I bought this during the Christmas week sale and don't regret it one bit. I use it for my PS3, 360, and my gaming PC. Compared to the ASUS VH series 21.5" TN panel I had been using for all 3, it's a major upgrade across the board.
On the PS3, I've only played GT5 in 3D and think it's fantastic; for 360, my test software has been Halo Anniversary, which also impresses. BF3, SC2, and Deus Ex all look great in 2D coming from my PC, but I have yet to attempt playing anything in 3D using my AMD 6970 video card.
I've heard people complain that text looks blurry on the PC using this monitor, but I can't confirm it; everything looks perfectly fine to me in-game, and I don't use the attached machine for web browsing etc.
My personal opinion? For $499, I would have been extremely upset with myself. $299 feels like a fair price for what you get.