I'm not the guy you asked but I have a similar opinion on flat screens. Personally I'd want spherical. ~15" tall and ~25" wide is about my limit for flat screens, anything beyond that I find that the corners/edges are too distant/distorted. My home setup is multiple independent 27" screens, which I like. My work setup is a single flat ultrawide (34" probably?), and I find myself physically leaning my head/body from side to side when I have two windows open next to each other. I have eye level a few inches from the top of the screen, and the lowest couple inches also seem distant/distorted.