The reason Windows Vista is part of this list is simply because it's still has extended support until 2017 so for whatever users still using (what is wrong with them?! ) then can continue to do so until it expires. As of a couple days now I've upgraded to Windows 10 (plus another laptop) and both of them run even better than before, i.e, smoother and quicker than Windows 7 (still a great Windows OS don't get me wrong).
Farewell, Windows 7.
Farewell, Windows 7.