All Star Music! As previously posted, let go of the bus thing as the AS resorts each have their own dedicated buses except on the rare occasion during the middle of the day. ASMu has nightly Disney films on a large blow-up screen by the main pool, games by the pool every day. It is smaller than Pop and therefore less congested at the food court. It may appear that the food court doesn't have all the selections for snacks and such to take to your room, they are located in the store in the back; along with a nice selection of cereals and sandwich stuff. I would advise considering the family suites for size, kitchenette, and two bathrooms. Now, with small children the kitchenette is wonderful - fridge, microwave, coffeemaker, shelving for food items, plasti-ware. Imagine being able to have your children have a peaceful morning breakfast of their regular favorites before heading out the door for the parks, or a cup of brewed coffee before being in the public eye -- priceless. The family suites are all fairly new renovations, as new as the decor at Pop is.
If we were to take another trip without our RV(it would only be due to snow drifts around the travel trailer) then we would be back at ASMu. Oh the memories, we were there at this time last year, just DH and I for our anniversary -- sorry side thought -- I had the chance for a quick trip this past June and chose ASMu over Pop because it is a smaller resort and has a more intimate feeling IMO.
It's all personal preference, just don't decide on the "whole bus thing"