We stayed at AoA 3 weeks ago and loved it! We had a nemo suite that my girls adored. The theming everywhere is amazing.
As for transportation, the busses weren't bad for us - and I had a double stroller (Phil and teds) to fold up every time we got on. It took about 6 minutes to get to HS, 12 minutes to AK and 15 to MK. We also came back to the hotel everyday for a 3 hour rest so the baby and DD2 could nap and we never waited more than 10 minutes for a bus.
That being said, we are going back in January 2014 for a short 4 night trip and we are staying at the Contemporary. Like a pp mentioned, the discounts are larger on the Deluxe resorts and we're going during value season, so for an extra $300 or so we are going for a monorail resort since this trip we will prob only be going to MK.
the only negative I found staying at AoA was the food court was so slow! I love the selection, fresh ingredients, healthy food, etc. but it takes so long to get the food because everything is made to order (with the exception of pizzas).
I know we will be disappointed in the size of our room @ the Contemporary because ours suite was huge with 2 full bathrooms, which was great for 5 people, but our Jan trip isn't going to be the blow out vacation like the one we just went on, so I'm willing to compromise on space.
if you still have questions about AoA let me know!