It really depends on what's important for you and your family. We've stayed in a suite at AoA twice now and we really like it there. We love having 2 bathrooms and a private bedroom as well as 2 TV's. We eat breakfast in the room most mornings and the large table and chairs is a nice bonus as is the microwave. In 14 days of staying at AoA we've never found the food court to be overly crowded (we're there in June). I've heard it can be a little crazy at breakfast time. We usually eat at "off" times, but we've eaten lunch there at noon and dinner at 5:00 and while we waited a few minutes for our food at 5:00 (because most things are custom made), we never had a problem finding a table and in fact, there were usually plenty of empty tables. We ate at both Contempo Cafe (CR) and Mara (AKL) on our recent trip and had a 20+ minute wait to order at both of those locations and then still had to wait another 5-10 minutes for our food. And at both locations, we had to wait for a table and ended up sitting at a table that was too small for our family and just pulled up an extra chair. We had the same experience at Capt. Cooks on a previous trip. We don't do the dining plan and usually only eat one or two table service meals on a trip, so the location of AoA in reference to making ADR's isn't an issue for us though I can see how it could be a challenging location if you eat a lot of table service meals. We typically take an afternoon break and decide where we're having dinner while lounging in our room. We've always had really good bus service at AoA and when returning from the parks, you always have the option of taking the bus to Pop and just walking back to AoA from there. It's a lovely walk across the bridge -- especially at night. We also like to sit on a bench on the bridge at night and watch the fireworks from DHS & EP or take a walk on the walking path around the lake. The bus ride to MK is about 20-25 minutes depending on traffic so if you're planning to spend a lot of time at MK, you might be better off at the Poly (though we usually go to MK 3 different days and really didn't find it to be an inconvenience). The ride to EP, DHS, & AK are all about 10 minutes or less (AK can be a little longer depending on whether or not you have to stop at the water park first).
We were at AoA last month and because of the discounts being offered, we could have stayed at the Contemporary or the Poly for same amount as what we paid for a suite at AoA. We considered staying at one of those locations but ultimately decided the convenience of the monorail didn't outweigh the extra space, private bedroom, 2 bathrooms, and 2 TV's. I'm sure you'll enjoy either resort. They both have their pros and cons.
