Ok... I've been with Windows since 3.1. XP was pretty good, but Win7 just rocks. Micky is bad, not to give it a service-pack-2.
I had Win8.1 on a laptop, and tried Win10 beta on my tower. I can't say that I love it...unless you like your laptop screen shaking everytime you tap it. ...and continually cleaning the screen. Win7 gives me more versatility than 8.1 or beta10.