Switched a long time ago from IE and no matter what other browser I try I always come back to Firefox after a while. It just behaves as I expect it to and the UI customization feature is awesome.
The only browser that I think could make me switch is qutebrowser, though the lack of an adblocker is an obstacle for me.
I do already block ads via the /etc/hosts file and it largely works pretty well but it completely fails on YouTube and Reddit. I've read that YT is at best tricky with pihole as well, so for now I just use Firefox for these sites and qutebrowser for most other purposes.
FWIW I just use a keybinding to open mpv for Youtube. There's also https://github.com/ParticleCore/Iridium which can prevent ads (though I'm not sure if it still works, it was broken at some point).
The only browser that I think could make me switch is qutebrowser, though the lack of an adblocker is an obstacle for me.