After getting a VA I tried swapping the IPS back in for a day, but my eyes can't handle the backlight on that thing. I think VA is helpful for reducing eye fatigue. I am still getting some fatigue with a VA, but it isn't nearly as bad as with IPS. I'm hoping that a 4k VA will be even better, having a higher PPI. I guess I'll see how it goes. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.