Ad blocking mostly. That's literally all I need in a chromium browser, because I only use it on a handful of sites that don't work properly in Firefox.

Chromium is also okay, but no ad blocker. I have that installed as well in the really unlikely case that the ad blocker gets in the way.

99% of my browsing is on a Firefox browser, and 99% of the rest is on Brave. I use it so infrequently the "time saved" metric is a merely seconds.