To add onto the discussion of Google Music vs locally stored, here is another aspect. I, too, need/want locally stored music rather than depending on the cloud. This is useful for 1) battery reasons (I'm rarely at a desk to charge from 6am to 9pm daily and am on the go) and 2) Manhattan subway. Now, in trying Android before going back to my iP5, I tried both the GS3 (twice, once with ICS and once with JB) and the N4. I definitely, definitely preferred stock and the Nexus hardware overall compared to the GS3 (disliked the build quality and AMOLED screen compared to the N4) but unfortunately, it's limited to 16GB max, which forces you to use the cloud. In comparison, I had a 64gb card in my GS3 and a 64gb iP5. Now, had the N4 had the option for more storage (and also a camera and battery life comparable to my iP5), I would have likely stuck with it for longer; that limitation, however, resulted in my returning it at the end. Even though the GS3 addressed the storage issue, I preferred the iP5 for a variety of reasons.
Ultimately, Google Music is a very nice idea and very seamless, overall, with iTunes, but not everyone can stream constantly (despite my unlimited data plan), and I don't have the time to micromanage which tracks I want on my device at any time. I ultimately felt like I would be micromanaging with the limited 16gb, and FOR ME, it wasn't worth the compromise in the end. Again, this does not apply to everyone, but these were the limitations that held ME up.
