Safari on Mac. It is the fastest browser anecdotally (on the websites I frequent), I trust apple with my data more than M$, Google, FFX, Brave. Very battery efficient.
Firefox on PC. Its a tower so power efficiency is a secondary concern. Mostly same reasons as above.
Would never use:
Brave: has marketed themselves as the "good guy" but they are very not. Youve been had, dear irate reader.
Chrome: runs like butt, is less web-standard compliant than fox, telemetry to google.
Edge: its chrome but telemetry to google AND Microsoft. Plus Microsoft pushing it so hard makes me want to spite them.
Would consider:
Chromium: chrome is broadly used, and for work (web dev) it is nice to be able to test on the target.
Opera: I know nothing about opera.
Vivaldi: I know nothing about Vivaldi.
Cant wait for:
Duck duck go: I wonder if it will be V8 or webkit or gecko or whatever. I hope its webkit but thats a "probably not".
Edit:
Oh! You know what! Browsing patterns might interest you:
20% YouTube/Netflix. <- Safari shines here particularly brightly.
20% GitHub.
10% reddit. <- Safari struggles here.
10% monitoring tools for work.
10% jira. <- every browser struggles here. f*** jira.
10% news (mostly hacker news, I hate the name.
https://news.ycombinator.com).
5% twitter (tryna quit haha).
5% utility (groceries, delivery, recipes, reservations, maps, paying utilities, checking order statuses)
10% etc.
HEAVY use of little snitch. Trackers aint got jack on me, jack.