Ok... So I've read up on what a 3D LUT will give you... it's more for color grading and transformation than calibration, and I fail to see how this isn't something any modern GPU can do in it's sleep, like a small compute shader run over the image before outputting it. So, again, perhaps it's meant for a feed coming straight from a fancy Cine camera, and in this case you've preloaded some moody "post-effect" onto the monitor so you can see a decent preview of how the color and lighting will look, before you go through the whole post-processing step and figure out you need to reshoot the scene (note, that's expensive!). Perhaps if that's your life, this feature is useful, and money saving. For a typical photographer, it's near useless.

Apparently Photoshop has supported 30-bit (10-bit x 3 channels) in Windows since 2012, however it's new to OS X (since El Capitan), and Photoshop added support as recently as December. It's support depends on the machine, obviously, and the only example they give is that the 5K iMac supports it.

IPS is good. A cheap $100-$200 monitors are based on something called "TN", or twisted nematic. They're good for office use, gaming, etc, but not art, photography, etc. The colors are typically poor, and change depending on viewing angle. On my old cheap Dell monitors some colors would shift considerably at low angles, and at extreme vertical angles the colors would actually invert. On my iMac's IPS display, at extreme angles, the brightness dims, but the colors remain true. You can test your monitor here, with nothing more than your browser and your eyes. The link should take you directly to the viewing angle test. View the image from above, below, left and right. Scroll down to the different colors, and see how they all respond... some colors may be affected less than others.

So, in summary, you want IPS. I'm not sure you need 10-bit per channel. A wider gamut may be good too, but be warned people viewing your images may not see something as nice as you do.

This guide seems to cover all this: http://www.144hzmonitors.com/photo-e...-january-2016/ ... the one they recommend for 4K... perhaps the one you were looking at, as it has the 14-bit 3D LUT, is the 32" NEC Multisync PA322UHD.