I've stayed at both and chose to go back to ASMo for my next trip. I liked POR, but the bus service was not very good and there was a lot of walking from my room to the main building. The AS's are large, but not spread out as much as POR. I also had much better bus service at AS. If you plan on spending more time at your resort, POR is nice since it offers some extras that the AS's don't. If you plan on just using your room to sleep and shower in, save your money and stay at AS.