[«SmG» Pandora]

There usually isn't any difference between the two, but there can be minor ones such as Spotify having looser restrictions allowing parody or remix music be used which apple music cannot.

Spotify also has the best device support allowing it to stream Spotify on numerous devices such as pc, mobile, console, TV, vehicles, etc.

To summarize, Spotify has the lead advantage here. I should also mention it has the best recommendation engine which can memorise the music you like replaying and listening to the most, then finding better results for more related genres.

So yeah, Spotify. Lol.