We haven't stayed at the YC, but have stayed at BC and while it is a nice resort, we love the WL. Even though the BC rooms are a little bigger than the WL rooms, we didn't find them to be a big difference in size. Now going from the BC to the Poly and GF......there is definitely a difference in room size there. But we didn't find that between WL and BC. We love everything about the WL. The location to MK is great, the pool is fun, and Roaring Forks is great for quick CS meals. One major issue for us at YC/BC is no CS (or very limited CS options). We like a hot breakfast without having to do a TS every morning and that's something the Epcot resorts don't have. As far as the pool.....the Poly pool is our favorite of the Disney resorts, with the WL close behind. We liked SAB, but it wasn't anything that blew us away to make us not want to stay anywhere else.