After my experience with Windows 8 I was hesitant to move to Windows 10. REAL HESITANT. Fenderman told me "stop whining, install Win10 and Classic Shell, and be done with it." I should have listened. I finally made the move from Win 7 to Win10 and I don't regret it.
Classic Shell makes the move relatively seamless and 10 feels faster to me than both 7 (and 8). I've upgraded all of our office workstations now and our users have said stuff like "I love it," which is a phrase I've never heard with regards to a Windows OS upgrade. One thing: Microsoft followed the herd; the default installation destroys your privacy. Do a custom install and read through all of the privacy (or lack thereof) settings, nearly all of which I turn off. Moo.