[BuckRogers]

So I've been using Vivaldi more so I can speak more authoritatively on it. Some missing pieces are mobile sync or ability to send tabs around on iOS, right-click and close all other tabs doesn't exist, and I wasn't able to right-click and get all of the back/forward history from the menu button. Vivaldi says to hold down the button to get the menu, but it doesn't work for me.

Otherwise, it duplicates FF pretty well. Its obviously lacking in everything else "Firefox" like container support and DNS over HTTPS. Firefox is just a very fleshed out browser that is hard to replace. Vivaldi also shares standard Chromium browser flaws, such as being difficult to pass all of Cloudflare's security tests[0], when it's trivial in Firefox.

I agree with you that Gecko should be replaced with Blink, but another more popular perspective by a lot of hardcore nerds is that they like Gecko because new code carried over from Servo is written in Rust. Which has sifted out of the pile of new languages over the past 15 years as the real star.

Over the years I've pretty much written off everything except Firefox and native browers. FF for power users, native (Edge/Safari etc) for best system performance. Battery life is a killer feature in my book. There's too much missing in Vivaldi for me to move to it, if I ever throw in the towel on Firefox it'll be for Edge, but I'll be keeping tabs on Vivaldi.

[0]https://www.cloudflare.com/ssl/encrypted-sni/