I have used both, but jumped ship when Apple came with the student discount and I have to say that in the beginning I hated Apple Music. Now? It's gotten better and better. The 'For You' has finally (after a couple months) found what I like and stopped suggesting 100% Rap/Hip-Hop music, but is know spot on. Playlists are finally increasing drastically and updating frequently. Also the way Spotify handles local music is dreadful imo. But the two are here to stay and the fact that both are here is good for the consumer.
I have both at the moment. I am doing that 3 month Spotify for 0.99 euros. After 1.5 week I can say this
Apple Music:
- [KILLER FEATURE] iCloud Music Library + local music: since i listen mainly soundtracks and trailer music I have a lot of unreleased material. Thanks to this killer feature I have all my music everywhere. This is the reason I still use Apple Music
-No webplayer: when I want to listen to music at work or somewhere else I need the laggy ugly horrible abomination called iTunes
- Desktop player: laggy ugly horrible abomination called iTunes deserves another mention
- Great/best integration with iOS
- iOS app looks great and functions great.
- biggest catalog
- better price/value with the music locker functionality
- music discovery is way worse. When I create a soundtrack radio station I get hiphop and other totally unrelated songs from time to time. Even when I dislike them, they come back again and again
Spotify:
- Webplayer is nice added bonus
- Quick responsive good looking desktop player
- Platform independent: stream to Playstation while gaming, chromecast, speakers etc
- Spotify Connect: quickly switch between devices and continue where you left off. Can't believe Apple didn't copy this great feature yet. Is is like handoff-mode for music.
- [KILLER FEATURE] Music discovery: the default generated playlists are really awesome: seems that Spotify knows everything about my musical tastes within a week, while Apple had months of data and years of Genius data of my local library, yet the recommendations in For You are either very boring or completely wrong.
Don't know which I am going to keep in the long run. Right now it seems when I want to play specific stuff I am looking for in my own library i use Apple Music. But when I want to be surprised and impressed by cool new music I fire up Spotify. Hard choice. Apple is sooooo close to the perfect music service if only their AI improves by 50-fold.