I took a while to decide which service I went for. Ultimately I chose Beats. The most important thing to me is being able to store full albums in my library, which all services do. I prefer Beats' recommendations because I felt they were most relevant, and also liked the curated playlists format better than Spotify. The playlists are usually a lot shorter than on Spotify though. I also just prefer the Beats interface. It's complicated compared to the others, but I think it looks best, and it's easy to understand eventually. I also like that it's part of Apple now, so hopefully it will be more integrated. The biggest drawback to not using Spotify is that you'll miss out on all the social features.