Oh good lord, don't ask this question in 2019.
OS is like a piece of garment. There is no best. Is what you are used to, is what you have invested in purchased Apps, written a few snazzy time-saving automation scripts? switchover to a brand new OS maybe more work and hassle than u willing to put up with.
I keep hearing W10 has this forced update anytime thing. What would be a no-no in my book. Two of my boxes are still on W7 and I have no intention to update. I don't need support, have a snazzy hardware firewall, follow my Image Backup procedure, am good, my mundane personal stuff is not that interesting to hackers.