No QS can kind of stinks, but honestly, how often do you need it? There are tons of places to eat that aren't QS, and if you do need something quick, the pizza window has good pizza, and the bakery on the boarwalk (which is 5 minutes from BC on the Boardwalk) has really good options for breakfast as well as lunch and dinner. Plus if you have park hopper passes, you can just run into Epcot if you need something.
As for which one, kind of depends what you want. The boardwalk has some cool street performances and such, but BC/YC have the great pool. Personally, I like the sitdowns over at BC/YC better, you can still walk/boat over to the Boardwalk to walk for the performances, and added with the pool, I'd pick BC/YC.