I think BW is a better deal, esp the stand rooms for F and W. That said, I would buy BC before BW. Anyone with little kids, BC pool is "WOW". For an adult only trip, you cannot beat the value at BW/ except with the values at AK.
There are more contracts at BW, so more for sale, so more supply which will effect pricing as well.
IMO I believe that BC will come down over the next 24 months to within 5$ of BW, but it is a guess based on where it is now, and has been...
I think the new WOW resort is BLT and having that on the resale longer will effect BC resale ability. Time will tell, but that is my opinion. A lot of BC lovers, are even more wowed with BLT. Esp seeing the years left on contracts. As more BLT owners sell... and they will, I think BLT will drop just a hair, also bringing down BC more.