< The Elusive 4K 16:10 Big Picture Touchscreen Monitor
Its funny how people attribute the invention of touchscreens to Apple, even though as you said, Microsoft made it a decade before them (albeit without the cultish fanfare).
As for 16:10 vs 16:9, I have 1920x1200 monitor, and can tell you that I barely use the edges of the screen. It just fades out of my vision, and that extra few hundred pixels are present but unused. This could be an issue of eyesight, since I doubt I could tell the difference between 4K and 8K. Framerate I notice though, so I guess my optimal setup would be 144 Hz at about 1080 if that's possible
I don't find a small touchscreen fun to use unless you are holding it.