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Xbrowsersync extension will make it easy to sync bookmarks across multiple browsers on multiple platforms. It’s open source and you can self host it if you want. This for me makes it easy to combine Firefox with brave and similar. Only Vivaldi doesn’t support it.
Hope this makes your browser switching easier and cross platform choices simpler.
Convenience and performance.
I’m a dual user of Firefox and Brave on different computers. In order to separate work and personal stuff and shopping, I use different profiles. Easy on brave, needs extension with separate app on Firefox, that doesn’t work on librewolf. And too often I have to stop my browsing because this Firefox setup is less stable and crashes once in a while causing annoyance.
Plus Chromecast. I like the ability to search for a video on the laptop and cast it to the TV.
It’s always a balance of convenience and privacy plus ethics, can’t have both.