Earlier quoted context omitted.
Huge difference. If you're in a country where they sell the Surface Book, go take a look and you'll immediately notice that there is a _lot_ more vertical space.
Did you even look at the graphic I linked to? If so, there’s no need to “go look” at anything, since that graphic very clearly shows there’s not a major difference.
If you're doing primarily vertical tasks (coding, web pages, etc.), the taller aspect ratio can be really helpful.
That said, I've mostly made my peace with 16:9. Write shorter functions (that's good anyway) and throw bars over to the side instead of top and bottom.