I have tried Apple Music a couple of times, it just does not match my music tastes even closely compared to Spotify, I can rely on the suggested playlists every time. I am always trying to find the music I want with Apple manually. And of course, I can play Spotify easily across a range of devices.
My only concern with Spotify is how long they will last, considering they don't make any money
"Spotify has announced a gross profit of $490 million on revenues of $1.92 billion for the quarter ending September 30."
Swings and roundabouts, Spotify is going nowhere though. Apple being the closed company they are don't publish numbers but all analysts agree on one thing, Apple is losing money on their music service, they need way higher subscribers but will struggle to get them anytime soon.
None of them is saints, Apple may pay more but look at the numbers up to end of 2018.
Apple paid $0.00735 per play, Spotify $0.00437, you are looking at about 200k plays for an artist to receive around $1,500 whilst on Spotify they need 335k plays. There is an argument that Spotify ultimately pays more to the artist than Apple will simple as they have a far bigger audience.
The other overlooked element is that Apple and Spotify (Most services to be fair) work on a pro-rata system, i.e. total listening numbers. So even if you don't listen to the most listened to artists, part of your sub goes to them, the artists you do listen to may get very little in comparison even if you never listen to others. It is estimated that around 70% of all revenue goes to 1% of artists.