Slightly related: when running 3 screens like that, put the middle (primary) one in landscape, so the array is like a big H.
It works better for videos and code, IMO. You still have two huge portrait fields for documentation/webpages/etc, or 8 portrait-oriented quarters.
I usually run 8 portrait-shaped windows quartered on the sides, then two side by side on the middle, which are each approximately square.
I don't like my editor window getting too tall.