Been using Google Play Music for a few days. My 90-day trial ends February 2015, but already I'm thinking $10/month ($9.99 really) is worth it. I'm in the process of uploading my iTunes library, and I've already found some tracks in my library I haven't listened to in a while (I think I should be pruning this library).
To that end, I've decided to try moving away from my iPod Touch as my primary music source - the biggest stumbling block to that is podcasts. I haven't found a podcast app that works as well for me as the iTunes Podcasts app - until now.
I tried out Pocket Casts, and it's pretty great. I've added most of my regular podcasts just by searching their names, not even bothering with RSS feeds. Awesome stuff so far!