I normally use Mullvad and a hardend Librewolf.

Mullvad seems funtionally the same as the tor browser. I believe the idea with the tor brower was that they would be difficult to distinguish for one person from the next. And same goes for Mullvad. The only differince being that Mullvad does't naturally go through the tor netwok, doesn't onionize sites, and uses mullvad's own search engin and DNS server by default. (Mullard's brower exists so that you have a tor browser without the tor network; And that's different topic of conversation)

Librewolf is closer the firefox experince, and I would happily recommend it to everyone. I personally enabled the sync funtion, switch the default search to ecosia, and hardend up some other settings. I haven't felt the need to add any plugins yet( that wern't installed by default).

In my tests, both have shown to be exellent privacy browsers. But as such, they both also stick out like a sore thumbs.

Overall, if you want the most privet browser, Mullvad seems hide more of my identity and fignerprint. But you will will look very suspicious.

I still recommend Librewolf over Mullvad, does everything I want and need it to do