I feel like I've gotten pretty picky with monitors. Right now, I'm running two old 1080p IPS displays from years ago, and the reason why is because I have trouble choosing an upgrade:

- IPS or OLED would be preferable for the wider viewing angles, better color reproduction and significantly richer blacks vs TFT panels, but they cost more.

- High refresh rate panels offer a notable improvement in user experience. Even if '60hz is enough' that does not mean you cannot benefit from more, especially when it comes to lower latency and techniques like black frame insertion (which reduces ghosting.)

- Variable refresh rate is nice, too: in some circumstances (mostly gaming today I presume) it could basically eliminate stuttering and dropped frames. NVidia now supporting FreeSync to a degree makes this even more enticing.

- Higher pixel densities greatly improve text legibility and picture quality, which can be especially great when viewing denser glyphs such as Japanese kanji. Bonus points: at decent densities, subpixel rendering can be switched off.

- Curved/ultra-wide panels are fairly enticing because they might offer a solution to the problem of wanting a single optimal display for your line of sight, versus two smaller displays.

...but in reality:

- Panels satisfying even just a few of these constraints can be very expensive and few, if any, satisfy literally all of them.

- Operating system support for high pixel density varies. Linux can vary from surprisingly good to absolutely terrible depending largely on your setup, and Windows varies strongly, though it is a lot better in 10 than it ever has been. MacOS has relatively good DPI support.

- The combination of high refresh rate and high pixel density makes for heavy bandwidth usage requiring cutting edge display connector standards to be supported on your GPU. Some displays require multiple ports to be plugged in and this can be flaky and glitchy.

- High refresh rate support in OSes is also a bit messy. I've not tried but I've heard Windows DWM can be buggy especially in mixed refresh rate setups. I also believe variable refresh rate is mostly only useful in situations where you have a fullscreen application running, since not everything will push frames out at the same time.

- If you switch to a single display, versus multiple homogeneous or hetrogenous displays, you lose some utility. My dual display setup has a unique feature, in that it works together with my IOMMU passthrough. The right monitor is designated to whatever virtual machine has the secondary GPU attached. Display forwarding is handled with Looking Glass, so I don't need a physical output. However, I have it plugged into the physical output, which allows me to switch to it for lower latency/reduced screen tear/debugging/etc.

- Panels are still evolving at a decent pace. In a few years, OLED monitors may be superior to IPS monitors. Also, prices of cutting edge technology is definitely trending down in the monitor space. It just feels like it hasn't been a good time to buy.

So I sit here with my 1080p monitors. They may not be great, but they have good viewing angles, decent colors, and they were pretty cheap when I got them (it was around the time cheaper IPSes started to hit.) The market has plenty worth switching for, but there's so much more potential, and the user experience hasn't always kept up with the innovation here.