Earlier quoted context omitted.
Same situation here. I do enjoy vertical tabs. I think edge has the best implementation of them.
Arc has the best Chrome-based implementation IMO. The best implementation all-round is tree style tabs in Firefox.
Tree style tabs are good. Great, even. But their UX implementation as a sidebar add-on isn't ideal IMO. Where edge gets it right is the side-tab bar can be automatically collapsed and extended on hover. I don't recall if you can do this with TST - its been a while since I've used it. But the fact that edge's implementation is native and not an add-on, makes it feel far more integrated and less clunky.