Here's one thought, withteh all stars, we found it was often easier to simply get off at a different stop. The resorts LOOK far apart,but they are actually quite close. It also depends where your room is located. If it is in a certain section, the walk from teh ASMu stop might even be closer to your room. for that reason, I like ASMu because it's in the middle.
Then again, Pop also has it's pluses. In my mind, Pop is better if you have a car. While you get three food courts at the AS, the food court at Pop is big, plus you cold go to the new resort.
If Ilook online, Pop is looking tobe the more popular of the two. But that's also means it's more crowded.