I'm torn between my favorite. I really liked Pop and stayed there 2 trips in a row. I tried All Star Music and it was ok, but I liked Pop better. This past trip I stayed at All Star Movies and I really liked it. I have young kids so they like Mickey and Toy Story. I really felt it was the most "Disney" of the resorts.
All Star Movies is also newly refurbished. Pop, on the other hands lost their slushy machines and the Goofy Pop jets...
So based solely on the fact that I'm a mom, I give a slight edge to All Star Movies followed closely by Pop. Though once we stay at Art of Animation they should win hands down for theming, covered bus stops, and the zero entry pool!