Hard to believe it's been six years since Win7 came out. I ignored Windows 8 altogether and stuck with 7 64 bit. I'm happy with it and can't see anything in Win10 that is worth the money. Don't care about "project Spartan" or Cortana. Don't wan't a Siri clone on my desktop.
Are you getting Windows 10? I'm sure it will be a boon for tablet users.