Physical media (specifically Blu-Ray) because…
-you can actually physically have a collection with nice shiny discs in nice shiny cases with nice shiny cover art.
-it is permanently yours.
-it’s bonus features/audio commentaries are assembled on beautiful menus
-Full HD quality with amazing surround sound tracks
But I do always make sure I have a digital file version for VLC IOS playback on my phone and IPad (Torrent HD compressed 4ish GB movies AFTER I have purchased the blu Ray.