I like Vivaldi very much, use it often, but I went back to Edge, mostly for 2 reasons:
- it does not support touch well;
- it does not play well with many sites when using an ad blocker: it becomes unresponsive, on generally has to select another tab or make the windows small then expand it, to be able to scroll again, click on a link, ... Somehow, I don't have the same problems with Google Chrome & the same ad blocker.
In the mean time, Edge has improved a lot, and while its still missing features, it's highly useable.
Vivaldi is still my goto browser for viewing 4K videos, since I assume Google is making it so that Edge is limited to 1440p.