There is also this monitor which I've been happy with if you're looking for an under 200 dollar price range and can't spend the little extra for the UltraSharp.
http://amzn.com/B0062K9LXE
Actually I have 2 of them.
The Ultrasharp is a bit misleading. It says it has a "Wide Gamut" but it doesn't cover all of the sRGB color space. Mine doesn't either, but I just find that more on the lines of false advertising. Wide Gamut meant to me it will cover more than the sRGB color space but may not cover all of Adobe1998 color space.
That being said, Dell still makes rather good monitors though I had to calibrate some because they tend to favor the red side a bit much.