I'm currently using firefox and thinking of switching, would love some more features and a better aesthetic, but I'm interested in what others are using!
Firefox with a handful of extensions for day to day use
I keep Brave with custom configuration ready for when extra privacy is needed. Firefox based browsers on Android are currently missing site isolation so that's what privacy guides recommends for the time being.
It might be cool to see something like Zen on Android, but I'm not sure what changes I'd like to see aesthetics / features wise. Brave looks fancier, but I find it annoying to use for a number of reasons. Off the top of my head