Ask any graphics pro what they look for in a monitor and they'll likely put color and/or gray-scale accuracy at the top of the list. With the HP DreamColor Z27X, you get both, as well as inky blacks, loads of features, and an impressive settings menu with calibration support.
Very accurate colors; Excellent gray-scale performance; Deep blacks; Six-port USB hub; Dual DisplayPort connections; Integrated calibration software
Expensive; Lacks auto-rotate support