Please let me disagree. Google Music has a terrible UI (as Spotify). Their only great feature is the ability to upload your own music. I'm moving to Spotify just because my friends create playlists there and they can share with me. Also the music discovery algorithms in Spotify are way better.
My great pain is that I had terrible results with the softwares that I tried to use to move my playlists.
Google Music (Android) has been one of my favorite UX on the platform, ever. It is dirt simple and exposes their award-winning machine-learning powered search in useful ways.
Spotify's looks attractive but daily use makes me miss Google's app. Spotify's web player loses pretty hard to Google's for me, as well.
That said, I just can't stomach YT Music. I don't know what they were thinking. The new value proposition for Premium is ad-free YouTube, which I might just keep buying because I'm addicted to celebrity math professors, astronomy, and a few crafting/DIY channels these days. But I'm struggling to like a music service anymore.
My great pain is that I had terrible results with the softwares that I tried to use to move my playlists.