Mullvad and Tor and it isn’t close. I use it to circumvent bans on social media when I say something too communist. Don’t alter it with addons in any way its perfect as it is.

If google, reddit, facebook, etc. can’t figure out I’m circumventing them I consider that good enough.

I also like Mullvad for most cases it has adblock by default which lowers the annoyances.

Many websites will be pissy if you’re secure as possible. Tor and Mullvad browser make them very pissy often. Its best to have a backup browser for that and normal activities. Librewolf and Ungoogled Chromium are good choices there. More secure, but fingerprintable enough that sites don’t get pissy.