In the last 5 years or so I have always updated the OSX when it was issued - until last year. I was fed up with the early problems that always appeared with the new operating system. So, until this morning, I was still on El Capitan. As Sierra is on the *.3 I decided that today I'd update my Mac and MacBook Air. What a difference! Absolutely seamless updates on both machines. That's the way forward for me in the future. Mind you, I cannot see much of a difference in day to day usage.