I can't live without multi-row tabs but it's totally doable in current Firefox. It's now possible with just CSS. It still breaks every so often when they make big UI changes but it's manageable.
Vivaldi is great on paper (if you don't care about it being F/OSS), but it's wildly unstable compared to all other major browsers including Firefox. Every time I try to use it as a primary, I end up running into something blocking within a week, reporting it, and switching back to whatever.
Which is a shame, because, stability aside, it really is the best option among Blink-based browsers, at least for the power user. No containers, sadly, but the problem there is Blink itself.
I can't live without multi-row tabs but it's totally doable in current Firefox. It's now possible with just CSS. It still breaks every so often when they make big UI changes but it's manageable.
It's the reason that Firefox is my main browser.