Our family of 4 (2 adults, 2 kids) over the past 6 years have stayed at each of the All Stars, Pop (twice) and Caribbean Beach Resort this year. Although we've never stayed at Art of Animation, we've crossed over from Pop and have walked the grounds there. The Suites at Art of Animation appear quite nice from what I've seen, but the dollars involved are quite high. The reason that we've been able to go 6 years in a row is because we've always stayed at the Value resorts and have booked based on price.
The "standard" rooms (also known as the Little Mermaid Rooms) are very well themed, but they are similar in size to some of the standard rooms at the All Star resorts, so we've had a hard time trying to swallow the price of those rooms. Those standard rooms are also a fair distance from the main hall and the main buildings.
Last time we were at Pop, we took the time to walk through all of Art of Animation and were surprised at how far those Little Mermaid rooms were from the food court. Our room over at Pop was closer..
The theming at the All Stars are very cool, and very much makes you feel like you are at Disney.
I'd investigate POP Century as an option too. We are going to Pop for our 3rd visit in August.