Using Vivaldi as my main browser for several months now. There are some problems with Google Docs, but other then that almost everything is fine. I really like company's attitude to its users, various researchers agree that they really don't leak what they say they don't. Firefox is superb too, but mobile browser experience is not there yet (I mean the new Android browser). Brave is another option, but I feel that Vivaldi is way more under my control and made "for me", even considering that Brave is open sourced.