Maybe I'm biased... but having stayed at both, back to back, Pop wins for me hands down.
I was stuck at Pop during Hurricane Jeanne, and then after the storm, I switched over to Movies as I waited for power to come back. I switched because I had been cooped up in the room during the storm, and I just wanted a change. What a difference...
I like the interior colors of Pop's rooms much better. The larger, nicer dresser at Pop, and the much larger TV that displayed the TV network on screen was also nice. (Instead of just a channel number, it displayed the channel, and what it was, so I didnt have to keep referring to the paper guide).
But the bigget thing was the shower -- at Pop they have bar soap and bottles of shampoo. At the All-Stars, they have all-in-one dispensers. 3 calls and 6 hours later, my request to have them bring me bar soap went unfulfilled. I guess a solution would be to bring ones own, but it shouldn't have to come down to that.