I’m on MacOS, and I tend to mostly use 3 for different reasons.
Safari has been my goto for battery, but Firefox has caught up. I may hop over in MacOS 14. My big sticking point has been integration with Apple’s keychain software, and that should change during the next major OS update.
Chrome for stupid g suite products that disable features for other browsers (aka, Google’s video chat)
Edge for free access to GPT 4.