During my Apple Music free trial I really loved the playlists and found more music that matched my tastes but it wasn't worth double the price when I can get student discount with Spotify
Apple Music costs just as much as Spotify here (as far as I know) but I had free trials on both and I decided to subscribe Apple Music, liked it better.
I just activated my Apple Music trial today. I think Spotify Premium is great, but wanted to give Apple Music a try. I'm really looking forward to the Siri integration. That's the only thing that's missing in Spotify.
The Apple Music user interface is kind of difficult to use so far. With Spotify, if I liked a song that was playing on a playlist, I could tap a button to see music from that artist or to see more music from that album. It's not as intuitive with Apple Music.