I've stayed at both, and both are good options. Before I can tell you what I think you should do, I have a couple of questions for you: Are you hang out by the pool people? Do you spend much time in the room?
If the pool is a big deal, POR would be the way to go. Much nicer pool area than the one at the Music resort. However if you spend a fair amount of down time hanging out in your room an All Star Suite will give you much more space. And then you would also get a second bathroom, if that matters to you.