I've been using Edge on Windows, macOS, and Android for the past year or so and have been really happy with it. I signed up for Arc and haven't gotten an invite yet but, looking at this article, it doesn't really seem to be that much of a game changer? At least not as much as the pretentiousness of "The Browser Company of New York" (gag) would have you think.

Edge has vertical tabs with the exact same "pinned tab" system. You can also switch back to horizontal tabs if you so wish. It also has tab grouping, password/history/extension syncing etc. etc. With the huge added bonus that it's available on all of my machines and phones, syncing across all of them (and giving what I'm sure is an uncomfortable amount of data to MSFT...)

The only "missing" feature would be the command bar which, even as a "browser power user", I don't see any use for. How is it any better than the usual omnibox?