When it comes to operating systems Microsoft Windows is the leader so far , if we refer by popularity. Personally i liked too much the old OS Windows Xp, because it was a system well designed, stable , and very easy to use it.
Talking about last year, i switched from windows 7 to 10 and i'm loving it , everything is perfect, and is running very smoothly? . However,comparing windows 7 with windows 10 , yes, windows 7 might be more stable than windows 10, but personally i like it more than 7.