I’ve been recommending the wide-gamut NEC displays for a long time now, and I own two 30" models and three 27" models, with my preference being the 30" PA301W for its large vertical area.
See my review of the NEC PA301W and the 27" NEC PA271W. Both are available at B&H Photo. Be sure to get the models that include the SpectraView II calibration option, which is a software + hardware add-on.
Recently, NEC began shipping the new SpectraSensor Pro Color Calibration Sensor (it is an X-Rite i1Display Pro). It’s a better design in terms of using it, so I like that also. It ships with the current NEC displays, according to NEC.
According to expert sources I trust, this new sensor is getting very close to the accuracy of devices costing thousands of dollars, yet it is only about $200.
I’ve switched to the new SpectraSensor Pro Color Calibration Sensor. Calibrating my NEC displays, it appears to calibrate faster, and the profile is very tightly constrained to well below one delta-E of accuracy.