I was daily driving Niri for a few months a while back and it was the first WM that worked nicely OOTB on a big ass ultrawide monitor. There is a nice hotkey to center your active window. I've found it was quite the hassle on other WMs to work nicely on a wide monitor. The traditional split view means nothing is directly in front so you're always turning. Or you have to spend a bunch of time customizing it to suit the monitor. Niri is the way to go in these cases IMO.

That being said, these days I prefer floating windows so I just use GNOME.