We have stayed in all 3 suite areas. First Nemo, then Lion King, and the last 3 times, Cars. Yes, Cars is my favorite. The theming outside, I just love walking down the road to my building. I must use laundry during our trips (special needs adult with some issues), and Cars is the best if this is part of your stay. (LK is a much longer walk to a pool, carrying laundry, and Nemo one is a little more crowded, or so it seemed). The decor inside the actual rooms, is less garish and overly colorful in Cars, as well, so for a few adult only stays, that was appreciated.
I liked all 3, and the first 2 stays, I booked without choosing a section, it just was booked as "family suite" and I got whatever they had left, so it was a surprise upon check in, lol. I love AoA, and we are DVC members, used to DVC.