I've switched to YouTube Music recently and it was pretty good for me. For me it's mostly on par with Google Play Music and on top of that it has a deep integration with Youtube. It allows you to play songs which are uploaded as videos on YouTube which is quite useful if some song/album is missed in the library. The only noticeable downside for me is that your YouTube Music subscriptions appear in YouTube subscriptions list which makes it harder to look for non-music stuff.