I'm not using any. I just signed up for the trial to Apple Music, and ended up turning it off and toggling all of that crap off in iTunes and on my iPhone. Just. Too. Much. Crap... Jammed into the Screen (iPhone) and Navigation Bar (iTunes). Really, my phone felt more like Apple's than mine.
And the iTunes Library Match stuff was... awful. Albums that iTunes downloaded with non-matching metadata (splitting the album in two) which I fixed... were showing up on my devices split up again with the cloud icon by them. It was just too much trouble.
I actually ended up wiping all the music off of my iPhone and resynching it with my iMac to fix issues with metadata and Album Art. The bright side of that is that I saved some space on my device by synching everything and having it convert the higher bitrate files to 256kbps AAC files ;-) Still sounds good, Lol.
I'll wait for Microsoft's Xbox Music app update and see if they make any changes to the services (like genre-specific internet radio stations) and if so, I'll get that since I have a Windows Notebook and Xbox Music works fine on a Mac via the browser (Requires Flash, though). I also like that I can Store and Stream my Music Collection from OneDrive for free. Apple charges for that.
Too bad Amazon's streaming library is pitiful. They have the best "value," IMO, with Amazon Prime Instant Video and other things bundled into the same package for basically the same price.