Our teens love the YC. SAB gets their vote for best pool/waterslide. They loved being able to walk around the Boardwalk at night and they really enjoyed being right next to their 2 favorite parks (Epcot and the Studios).
They also enjoyed our stay at POFQ. We didn't really notice a lot of other teens staying there (seemed to be younger families). Our older ones loved taking the boat to DTD on their own. The only downside to them was the pool. They claim it was "babyish". The 13 y/o swam there several times and seemed to enjoy it, but he didn't like the slide at all. He and I also walked to Riverside 2x and used their pool. He liked it a little better. The others didn't go, so I don't have their opinion.
My youngest (13) also loves AKL, the Poly, and the Contemporary. The Contemporary is probably his favorite overall. He likes the rooms, restaurants, shops, arcade, and pool. He claims their arcade is the best.