Currently running W7-64. Would have stayed with XP if I had a choice. Really dislike W8; it seems like nothing more than W7 with a tablet/smart phone interface.
I'm really old school and would love to go back to DOS, at least for business applications. Never had an OS problem. Can't say the same thing about any of the MS or Apple systems. I have to admit I don't do gaming, social media, or music much. Really don't like GUI's, and the mouse/cursor programs for business applications are the greatest time wasters I've seen. Just give me programs that let me get business stuff done, but again, I want absolute reliability and the newer stuff that caters to folks who can only point and click don't deliver that. FWIW, my cell phone makes calls...period. Just my opinions on what I prefer.
Yup, REAL OLD ... school...codger...
Now, where did I put that abacus?