Security or privacy? If security is all you care about then any modern browser is fine so long as you keep it up to date. If privacy is a concern then get LibreWolf + uBlock Origin and you’re good to go.

You should try some. I’ve got the Sony XM4s, the battery lasts for an eternity and I never want to faff about with wires again!

Same. They shadow deleted a comment I made with a link to lemmy, I can still see it if I’m logged in though.