I far prefer Firefox for basically every case. I honestly do a fair amount of surfing on a Raspberry Pi 4 and Chromium is unusable on it while Firefox is quite usable. And that makes me think Firefox is lighter-weight than Chromium.

I do a lot of web development and prefer Firefox over Chrome/Chromium for that purpose as well.

Brave is way too cryptocurrency-adjacent for me to be comfortable with.

I was already using Firefox well before the whole WEI thing with Chromium went down. But that made it clear Chromium isn't to be trusted.

All that said, Mozilla haa recently gotten in bed with advertising companies and talked about adding AI "features." I don't trust that Firefox will continue to be any better than Chrome.