Windows feels less stable today than it has been for a long time. I spend so long, on every Windows computer, waiting for windows that have turned white and say “not responding” in the title bar. I use Linux for almost everything, partly out of principle, but largely because the Windows experience is so slow and frustrating these days. For the most part, the friendlier Linux distros do a better job of just working.
Vivaldi is a very good browser, but if you want to support open web standards it would be better to use a non-Chromium-based browser like one of the Firefox derivatives. Also Vivaldi is closed source. Still, I do like Vivaldi.