My wife has a NEC EA231WMi monitor. It calibrates quite nicely with an i1Display2 using just the free software from the Xrite site. I think maybe it's a 6 bit display, not sure. But it looks good with Photoshop and has a very wide viewing angle.
I just bought an LG IPS LED "IPS236" monitor for under $250 at Best Buy. Not at all bad for 23". Will be a second monitor alongside the NEC2690. Very nice looking screen, but I won't have the time to deal with it for another couple weeks. Seems to have enough adjustment to reach a decent calibration, and a good menu system that won't make that too big a chore. Looked pretty decent out of the box, was set for around 200mcd or thereabouts.