[trabant00]

I use mpv (and mplayer before that) from CLI and I find it the best user experience. Sure, it takes some time to read the man and play with it, but now I start it with a bash alias on the display I want and the sound output for either: TV + big sound system or monitor + desktop speakers, depending on whether I am at my desk or on the couch. With a cheap wireless mini keyboard I get all the shortcuts one single key press away.

With a GUI player I have to navigate menus with a pointer to switch displays and sound, or to select sound and subtitle language, subtitle delay, contrast and brightness, etc.

Mpv also integrates with youtube-dl. You can tune the buffer size to never require pausing because of internet problems, select whatever quality with no auto switching like the native youtube client. Supports playlists and everything.