Edge is fast as forget, and once ublock support is added it will be the best one ever.
the difference in speed between any modern browser is not really worth mentioning
none of them can magically make your connection faster, and everything else they normally do is going to be happening too fast for you to notice
(
but still, even its speed is questionable at best)
so what really matters is everything else
like extensions. chrome has a huge library of extensions, and so does firefox
also open-sourceness. edge is not even remotely open-source. chrome is mostly open-source, and firefox is entirely
I like open-source things, so maybe I'm biased about that. but I think anyone can see the appeal in knowing exactly what's going on in your web browser, if nothing else