I'm curious if you've used Chrome OS recently, there's a lot of good work there too. Touch is there if you need it with the keyboard open, then goes into tablet mode if the laptop is convertible or detachable. The touch/tablet UI has lost many rough edges in the last 2-3 years, and it hasn't affected the mouse/keyboard mode most people use Chromebooks for.

I don't use Windows anymore but I remember thinking "this is exactly what I've always wanted from a convertible/touch-support-in-desktop OS"...