Super 21/9 screen
I've gone from two 16:9 screens to just one 21:9 screen and it's just incredible on most video games.
For all the types of games I play (single-player, simulation, fps), the immersion is incredible. Even if you don't necessarily actively use the extra width, the peripheral vision does the job and lets you enjoy the games even more.
The screen itself is crisp, and I didn't experience any particular discomfort when using it.
Installing the screen is straightforward, with the cables passing through the screen mount to improve the aesthetics of the desktop.
The LEDs on the back of the screen are very anecdotal.
Like other users, I found the OSD a little complicated to use, but once you've set it up the way you want it, you soon forget about it.