I've done AoA LM rooms and two of the AS (sports and Music X2). I'm the first to admit I'm not fond of the overly large icon themeing and having done 2-5 days at a value I'm thinking about 3 days there is my max comfort level, so not my favorite level of stay.
That being said:
I don't want to stay at AoA again.
Bus waits at AoA were long and crowded. Bus waits at AS were short and while sometimes the buses were full they were never sardine can crowded nor did I have to wait very often for a second bus (and that was rare and the second bus came up after 5-10 min). I've had 3 stays at AS and I've shared buses less then 10 times, maybe 2 or 3 times per stay. (and one of those is almost always the DTD bus)
AoA is HUGE with more rooms than the AS, they have one bus stop so incredibly long lines to get on at peak times.
(and AoA and POP did share buses last year, not often but they did occasionally).
I was not thrilled with the AoA food court (I'm pretty basic as far as food) but I did find enough variety at the AS. I bus my own table no matter where I eat at CS so that doesn't bother me. Real silverware/plates was kind of reminiscent of grade school. Food was slow even if the food court was not busy.
I did not mind the walk from LM but it is longer than some are comfortable with. You'd have to be at the very back of one of the AS resorts to walk that long but for the same price as a LM room (and sometimes cheaper) you can get an AS preferred room.
I just found AoA to be super crowded (and I stayed at sports with competition teams), very loud and not worth the extra money.
Oh yeah the LM rooms cost more than the AS rooms.
Plus Ursula creeped me out, I took the stairs on the end and avoided the elevator.