I use a 49-inch LG ultrawide. 5120 X 1440, at 60Hz. Had it for a number of years. I think it was about $1,100, when I got it.

It seemed too big, at first, and I split it, but got used to it at full width.

I don't really care that much about pixel density or super-high framerate. I'm old, and don't really game. For software development, it's great.