Firefox has just always been the sensible choice for me personally. Having it be open and run by Mozilla (who for all their faults I think are good folks), having an honest focus on user privacy,and the only non-chromium browser, and therefore the only one that won't ransom my RAM, makes the choice just logical. On top of that, on mobile, Firefox can bring over my beloved plug-ins (the wealth of plug-ins is a plus too) for a great browsing experience like with UBlock Origin, and Firefox Focus is a godsend: doing stupid searches or quick tasks that disappear and don't clog my tabs in the real browser!