I guess that really depends on how you classify "best"
Tor is pretty good for protection. Then there's always i2P as well…
Saying one browser can protect the best is pretty hard to prove.
I wouldn't say Tor Browser is the best because it requires custom configuration to be usable conveniently, which will make the connection non-uniform (and the user will stand out).
>Tor is pretty good for protection. Then there's always i2P as well…
Tor and i2P does nothing for (anti)fingerprinting - the program which render the web pages does.
>Saying one browser can protect the best is pretty hard to prove.
Not a proof but things to consider: https://privacytests.org/
The best browser for protection is https://mullvad.net/en/browser because it makes the connection uniform, to better blend in.
Upgrades are the bane of tech. They are justified by "security" like every law that takes away freedom and privacy is done in the name of "protecting children". It's all BS.
My main machine in on Windows 7. It can't be upgraded anymore. No updates for me! Which is exactly what I want. Pure joy.