I may get some naysayers for this, maybe because I'm on macOS and not Linux or Windows but...
Two features I love about Safari is:
- Pinch/Zoom to view all my tabs as windows to switch between tabs
- What at least appears to be total isolation between tabs when in private browsing mode. If I login to Facebook in one tab, then open up a new tab and go to Facebook, it will not see me as logged in.
Chrome nor Firefox have either of those features.