I use Apple Music + bring a lot of my personal collection into it. Luckily it also is able to sync this collection across devices. I believe that the catalogue

I use Apple Music + bring a lot of my personal collection into it. Luckily it also is able to sync this collection across devices. I believe that the catalogue in Spotify is a bit better, at least I didn't see "this song is not available in your country" messages in Spotify. In Apple Music I see it all the time.