I’m using a Philips 345B/1C ultrawide 21:9 monitor in place of two old (10 years or more) flatscreens. That’s basically CinemaScope. It’s sold as a business monitor, whatever that means, it’s pretty cheap (<£300) and not overly dazzling. It’s a bit dated, so still has USB 3.1 connectors on its hub rather than USB C, but for the money it didn’t seem worth fretting over. Has a couple of basic speakers in it which is handy if you don’t want to fire up the audio interface and speakers (getting a bit economy-minded in my old age).
It is 3440 x 1440 supposedly 100Hz but as I don’t game and am just running off an Intel built-in graphics chip (UHD 630) at 60Hz it’s fine. I’ve scaled the display for my ageing eyesight so kept the underlying resolution but upped the font size.
The main thing is it is more flexible and tidier than the two monitor solution - just fits in between my Yamaha HS5s nicely - a bit narrower. Handling the screen layouts only takes a short time, mainly still left and right, sometimes centre, and sometimes full width. With Windows 11 it’s easy enough to operate and I stuck on PowerToys but whatever I am doing (which I couldn’t exactly say what it is now) is easy enough to control the layout.