I was using LibreWolf before, but I really like the idea of bundling VPN + Browser, and also the way they handle payments - not only is Mullvad VPN kind of cheap, I can just pay with crypto and don't need any account (kind of - you just generate username that also serves as an password, without any other contact information required).

But what I like the most about it is the idea of making a browser with the goal of having the same fingerprint between users (as much as possible), and offering it with a VPN - becuase that means that most of other users of the VPN will probably also have the same fingerprint from the browser, so you will blend in with them. I wasn't really sold on the idea of VPN before that and didn't use one, but this was what convinced me.

But tbh I haven't done much research into the company, or into the effectivness of their implementation. I'm kind of betting on their cooperation with Tor Browser, which should have most of this stuff already figured out. But it's possible that other browsers are just better at it, I never checked.

I do however still use LibreWolf for the occasional site that breaks with Mullvad, but it's not something that happens too often.

I use(d) the VPN alongside it and found the add-on “hints” regarding the correct DNS settings more frustrating than helpful, too.

Hmm, I don't think I've ever noticed anything about DNS. I think I've actually never click on the browser vpn extension, though :D Is it the encrypted DNS hint?

EDIT: Found this, apparently it's doing pretty well https://privacytests.org/