I'm choosing a main browser, and I think that firefox with ublock and brave are probably equally good in terms of privacy and security, both of them look quite nice, and both are FOSS. The final thing that I'm considering is resource consumption. This reddit post shows that firefox is better than brave in benchmarks and ram consumption, but what about when firefox has ublock running and brave has all their preinstalled "extension" like brave rewards and wallet disabled (except brave shields is left enabled)?

Edit: some people are mentioning brave's cryptocurrency. I don't want to use that, and I would just turn it off and use brave as an improved chrome.