Personally, I use a single 38" curved monitor (3480x1600). I have old man eyes but this allows me to have up to 4 vertically split tmux panes with at least 80 c

Personally, I use a single 38" curved monitor (3480x1600). I have old man eyes but this allows me to have up to 4 vertically split tmux panes with at least 80 cols in each pane for programming in vim. I find multi-monitor very distracting, but I'd never go back to a single 1080p screen at this point.