Firefox have done major browser-chrome changes (unremovable buttons) in order to court financial incentives too. FF is my main browser out of habit but with their recent history I don't trust them not to try and sell out their users [again].

Can you be specific?

Overall I feel that Firefox is sufficiently customisable, that it's probably the easiest browser to protect your privacy in and control content. I like Safari, but customisation is harder to do.