We've also stayed at both: YC in 2003, 2004 and BC Nov. 2004. We have stayed at all deluxes with the exception of WL and I must say YC is our favorite (even more so than GF).
Our vote also goes to YC over BC. Since the $ involved is essentially the same at both resorts, we will be selecting YC from now on. BC is closer to Epcot, but YC is closer to the boat dock. For some reason we received outstanding rooms at YC both times---lake view, king, very private balcony, second floor, very close to elevator and the elegant wooden stairway. We also felt the service and cleanliness of YC was superior to BC.
We are not listed in the Blue Book of our hometown and I will say that we did not feel the resort has the least bit of a 'stuffy' attitude to it. Just very, very well maintained and operated, elegant and friendly. We just loved walking back into that peaceful and comfy lobby after a long day at the loud and crowded parks.