I also gave Firefox another shot a couple months ago and I'm surprised at how much better it is nowadays. It's been such a good experience I'm also giving a go to the Firefox Preview[0] on my Android - even though it's still under heavy development, I like some of the changes to the mobile browser it makes and it'll make in a near future.
Firefox is definitely an amazing experience, especially if you use Firefox Containers[1]. My only gripe is that the UX of containers isn't quite ready for prime time yet (e.g. your container setup doesn't sync by default).
And there really needs to be an easy way to switch profiles. Firefox has had profiles for basically forever, but it's much easier to switch profiles in Chrome.
I currently go to about:profiles and click "open this profile in a new window", but this is very klutzy compared to Chrome's profile switcher next to the URL bar.
Of course you can also create launchers/shortcuts for Firefox with "firefox -P profilename" but again that's work you have to do on each machine you use.
A classic solution is just one shortcut of `firefox -no-remote -ProfileManager` which semi-replicates one of the old Netscape-feeling behaviors in that such a shortcut will always create a new instance of Firefox and first launch the select profile window.
The only thing I missed from the ordinary Firefox on Android was that Firefox used to have a brilliant hack with the sharing option where they would show the two most frequently used options (+ a sharing button to access the rest) instead of just one or just the sharing button.
This saved me a few seconds again and again and again.
Yeah, the sharing button thing is something I miss from the ordinary Firefox too. I usually share links with my friends through Whatsapp and its icon is hidden far to the right.
[0] https://blog.mozilla.org/futurereleases/2019/12/03/firefox-p...