Re: Google Play Music
I too, much prefer this to everything else out there, the seamless integration of my free 50,000 of my own music, along with bought music and the dip in and dip out subscription with better than Pandora music discovery and human playlist curation (and hopefully the currently US, but soon UK free curated playlists). Nothing else has even come remotely close.
I also find Google music catalogue of music to be among the best and the buy prices equal or better than the others. The Google play music promotions (free tracks, 99p album of the week etc) are also great.