I stayed at Pop in 2011 in 60's. Our room overlooking the pool at Pop & was very pretty view. I stayed at All stars sports Oct. 2012 in standard homerun section which we really liked, & we overlooked a pool there. It wasn't that bad of walk, being smaller resort, to the lobby and very close to our car. As far as the rooms, Sports was the same room as we stayed in at Pop. I did have a fridge at Sports but no freezer. I had a fridge at Pop but don't remember if it had a freezer or not. Pop is newer, a bigger food court, bigger lobby, pretty on the lake. Easy walking distance to AOA. All stars is older, but I found my room, grounds, lobby, food court, to be clean. At the all stars you can visit all three of food courts, shopping, and pools. As far as location I didn't see a problem in staying anywhere at Sports, or Movies(except higher price). But if I stayed at Music I would want to pay for a preferred room to be at the pool and lobby because I do not like the back section of music that overlooked parking lot next to Sports.
Jazz section would be my 2nd choice of Music. As far as the busses I didn't find a problem with them either resort. I was at Pop over July 4th and Sports in the fall. Pop is sometimes the farthest bus stop to walk to at theme parks on your way back to the resort.