I have the NEC 2690 Wuxi2 w/included color calibration hardware & software package. About $1300 at discount. So far I'm happy with it. It's great to have the larger screen real estate when working with Lightroom (diagonal screen size is about 25.5"), and I really like the simplicity and flexibility of the color calibration software.
The package is very easy to use (too bad the documentation, as detailed as it is separately for the monitor and for software, is a bit confusing at first in that it doesn't explain how the software overrides some of the hardware settings you can make manually via the monitor buttons themselves). In the included software you choose preset monitor targets and/or create more of your own, calibrate each with the customized included hardware device, and save them. To invoke what you want to use at a computer session, you just run the software and then select which target you want. That target overrides the monitor profile, used by the OS (at least in Win 7's case) and apps like Lightroom and Picture Window Pro. To change the monitor display just open up a different saved target and the change is made on the fly w/o having to save a file or do anything else.
It has an approximate sRGB target (that you calibrate with the included device, as you would all the targets you want to use). For when I'll be saving photos for web use or for printing at a lab that wants sRGB files I use that. I use a different target for when I want to approximate the Adobe RGB color space (for example when I'll be printing on a high end inkjet that can actually print those colors/saturation that aren't in sRGB. It's easy to switch back and forth between those two or any number of other saved calibrated targets. The software shows you the color gamut of the calibrated target compared to sRGB and Adobe RGB (as well as some other options).
I use the monitor with DVI-D inputs (it doesn't have display port nor HDMI inputs).
For the money it seems to be a good value to me. I hear, as others on this forum have said, that the Eizo is the top of the heap, but the cost of their monitors plus calibration packages was more than I wanted to spend. When I added the cost of a good calibration package to the cost of the Dell 24", the difference in price of about $400 net (say 600 for the dell + maybe 300 = 900), to get a bigger and better monitor was an easy choice for me to make.