I don't think it's that subjective. The gulf in quality between them is incredibly apparent. And AM has a distinct focus on RnB, rap, hip hop-type stuff. It infiltrates everywhere - even chill themed playlists with no apparent hip hop or electronic theme will have an abundance of hip hop beats and auto-tuned nonsense. Unless you avoid the curated playlists entirely you can't dodge it.
I fired up iTunes a few minutes ago to check out the Apple Music content. I used iTunes and AM for years (and my library is big) so Apple should have plenty of data on my listening habits.
- Can't make it more than a few songs in any of the chilled playlists. What is this garbage. All some combination of auto-tuned, hip hop, way too out there ambient, instrumental and old stuff.
- The slight lag when selecting anything and when tracks start is annoying when you're used to Spotify.
- The mixes in the For You tab are hilariously bad. The track lists have many glaring issues, but even a few cursory skips around the opening tracks are awful.
- The New Music mix is especially bad considering just earlier I wrapped up my Release Radar in Spotify. How can Spotify find 30 awesome songs for me and Apple has nothing but weird not-very-new stuff? Because Spotify knows how machine learning works.
- The Browse section of iTunes has become even more unintuitive to use. Man it's a chore finding playlists.
- The emphasis on hip hop is ridiculously strong. I lose the will to live when I hear that Chris Brown-esque s**t start to play in every conceivable playlist.
Everyone in my family has access to Apple Music through my AM Family plan (which I keep for my mom - she just listens to her uploaded stuff). No one but her uses it. AM has virtually no value in discovering great new music. We're all using either Spotify, Play Music or YouTube Music.