Depends. If you've also blocked ads with pi-hole or the Android hosts file Firefox and Chrome get closer. Ublock on Firefox is absolutely indespensible for sites that may be actively hostile like piracy or porn, but for casual browsing the UI of Chrome is a lot better.

For example, I prefer the address bar at the top. Firefox doesn't like that, so the new tab button stays on the bottom, meaning I have a six inch stretch between where my finger was to hit the tab manager and where it has to go to open a new tab. It's full of little things like that where the only explanation that comes to mind is that Mozilla decided they couldn't do it the best way because Chrome was already doing it that way.