That is a tough choice, being that those are two amazing resorts. They both have the best locations...but with Poly being on the monorail, that makes it better for location. I have always love the Poly, never stayed there but I have been going there every single trip because it is my favorite. The atmosphere, the beach, luau show, theme is amazing, Kona and O'hanas are two of my fave restaurants on property. BC is also great because it is just a walk/boatride away from my favorite park...Epcot. The pool is probably the most popular out of all the resorts, and you are just steps away from the Boardwalk. I believe the Poly is a bit more pricey..that is the ONLY thing holding me back from staying there.
All in all, I would have to lean towards the Poly...especially if money is not an issue. No matter which one you choose, you won't be dissappointed...they are both amazing! :wave: