4k displays: difference between $1.5K and $3K IPS?

[Zeidora]

I am getting serious about upgrading my dual 27” Apple Cinema displays on a new Mac Pro soup can to dual 4k displays.
- Purpose: photoedit (naturally) and book layout in Quark and ID, the usual computer stuff (web, office, db, pp, dreamweaver). No video or gaming.
- I have (and use) a Colormunki spider.
- Size: given the smaller pixels, should the physical size be larger? I used to have 30" displays when they existed, and that was OK.

The top contenders are:
- LG 31MU97-B IPS 31.5” 320 cd/m2 $1200/1400, 99.5% AdobeRGB [review notes that it does not get 4k res on Mac pro].
- ASUS PQ321Q 32” IGZO (TN/IPS?) 350 cd/m2 $1500
- Samsung U32D970Q 32” type? 350 cd/m2 1000:1 S1700. 99.5% Adobe RGB

- NEC PA322UHD IGZO-IPS 32" 350 cd/m2 1000:1 $3K (136.6% sRGB, 99.2% Adobe RGB)

Has anybody seen side-by-side NEC vs the $1.5K crowd displays? What is the difference? Thanks for any insight.

 

[mistaspeedy]

I think it comes down to the color reproduction. There are various color spaces, like sRGB, Adobe RGB, NTSC and other newer ones.

If I read the specs right, the NEC supports 92.4% of the very wide NTSC color gamut, whilst the Asus does 80%.
I can't find specs on the Samsung and some forum threads seem to suggest that the LG does more than 100% NTSC, but I'm not sure I believe that.
The NEC seems to have a ton of options to connect lots of stuff to it. But I'm not really sure of what the other differences could be, I'm not really into monitor specifications as much as I could be.

http://www.necdisplay.com/p/desktop-monitors/pa322uhd-bk
https://www.asus.com/Monitors/PQ321Q/specifications/