I've experienced El Capitan for a while and I've been very satisfied.
My new Mac has worked flawlessly, because El Capitan is a very stable and reliable system, a rock solid warhorse.
The hacker/pioneer in me, though, was tempted by the new features of macOS Sierra.
I'm very busy with my college, so I postponed this dilemma for a while.
One weekend, though, I created a clone of my configuration with Super Duper! and decided to give Sierra a go.
I almost immediately regretted my decision.