Spotify it's much easier to share and find custom-made playlists by other users for certain things ("gym" playlists, playlists for specific artists, party playlists, etc.), whereas Apple Music has better integration with your phone and isn't as stingy on 1 device at a time like spotify.
If you're a student, can't go wrong with checking on whatever student offers they make. Both become 4.99 a month with student, but Spotify Student does include Hulu for free with that 4.99