Same here. Spotify finally pissed me off enough yesterday that I just went and cancelled and I'll see how Play works out. It's just far too buggy and I don't remember a day I haven't had problems with it lately.
My experience of Google Play Music is that it works well when it works. But something it really likes doing is not playing. Our running joke is that every time a butterfly flaps its wings anywhere in the world, Play stops playing. While hyperbole it does happen a lot, especially if there is less than perfect networking (eg while driving). But it will also stop playing with perfect networking, usually at the end of a song for no good reason.
Spotify is far better at actually playing under the same conditions. If anything it is too eager (there was that time I had to tell it to stop 4 times). However it is a huge pain if you want it to just play music without having to babysit what it plays.
Ya I uninstalled spotify and my idle battery charge time went from 1/2 day to 2 days. (s4 on lolipop) Did not seem to be a "don't fucking turn on or do anything when I'm not using you" setting in the app anywhere. Oh well I did like the service.
Spotify is far better at actually playing under the same conditions. If anything it is too eager (there was that time I had to tell it to stop 4 times). However it is a huge pain if you want it to just play music without having to babysit what it plays.