I finally tried out a 27" monitor rotated 90 degrees to vertical orientation, and it's been great, wished I'd done it years ago. Much of the web and software, I'm realizing, are designed for more than portrait-orientation screen height...while monitor shapes are designed for watching movies.
In Proseries you can see an entire form or entry worksheet at once and it really speeds things up. For web reading sites like WSJ are way better without being trapped in that top part of the site.
I got a new Asus monitor, they have a bunch that are ready for setting up in either orientation out of the box. But there are plenty of options and it's hard to spend even $300 unless you go 4k (which wouldn't be a bad idea). And you can just get brackets to mount monitors not built for it.
Give it a try!