[JFreak]

I can double that, Sierra has been very well built OS and it makes me think about Snow Leopard which left PPC code burden behind. But in this case Sierra is the last OS before Apple's new filesystem. It seems they have put more effort than usual to iron out bugs and even had time to tweak their code for perfromance.

With that said, all of my computers are running High Sierra but that is because I want to gather as mucb first hand experience from the filesystem than possible. I have accepted the fact that this approach will let me face some kinks here and there, but those have been fewer than I expected.

...and the next OS is likely released soon :P