With monitors, you get what you pay for. I spend most of my day staring at a computer screen, so I was willing to spend a bit more on something that I'm going to be (hopefully) staring at for thousands of hours over the next few years.
My Apple Cinema Display (30") from 2008 had finally died and I was in the market for a 4k monitor; At first, I was looking at the 28" class and $500 class and got a Samsung; It was not usable for me and it was then I learned the difference between a TN and IPS monitor.
I've only encountered one problem and I have one quibble; (1) The problem is that I could not get the HDMI to display at 60 Hz; Yes, I used the proper one of three HDMI ports and my NVIDIA GeForce 960 card is more than capable of supporting this.