I had the privilege to test the pre-production NEC PA322UHD. I dare to say it is the best LCD display I ever saw. As expected, the resolution is stunning, but the whole rest is also more than just perfect - the tonal response curve is perfectly linear thanks to 14(16)bit 3DLUT, the uniformity is as good as in smaller PA-series, there's a huge gamut typical for GBr LED backlight, satin diffuser that makes the image clean and vivid, and there's also Optical Compensation Film on board, so there's no trace of black leaking at angle, which is typical drawback of IPS-type panels.
The NEC SpectraView II and Multiprofiler software is not ready yet, but even without it it was so fantastic, that after I gave it back I can't stand my old 30" NEC anymore - the UHD withdrawal symptoms are killing me
I'm eagerly waiting to buy this magnificent display as soon as it will become available in 3th quarter of this year, and I highly recommend it to anyone who only can afford it
That's the display I've been waiting for the whole of my life!
Even the model was under impression of the monitor she was retouched on