Looking at an HP ZR24w 5ms S-IPS panel LCD monitor
$529.95 on Newegg.
Anybody using 1 of these?
You need to understand that IPS panel LCD monitors are not built for gaming in mind but rather CAD work. Their input lag is normally unaceptable unless they have a game mode of sorts. (anything below 14ms input lag is acceptable, do not confuse this with pixel response time) Be aware that manufactures do not tell you the input lag of their products so you'll have to find an online review which tests for it.
The new backlit LED monitors are just starting to pour of production and I would defo recommend them for sure. I have just a cheap backlit LED BenQ G2420HDBL and the image quality for a fast TN panel is rather amazing, more then I'll ever need.
If you have enough GPU power to push 120FPS then I would recommend you look for a monitor which has a refresh rate to match (120hz) over an LED backlit panel. Sorry, your still using a 9800 GTX GPU so please ignore this paragraph.
Here's what I'm currently looking at.
http://www.flatpanelshd.com/news.php?subaction=showfull&id=1263457115 and I can't wait to see the review, fingers cross it's good.