I am a DVC member with my home resort at BWV. All 3 resorts are fantastic, it just all depends on what appeals and fits your group the best.
WLV is fantastic for close proximity to MK and the MK resorts which includes many of the great character meals. WLV is also very conveniently located to FW which is home to the HDD revue dinner show and also FW has a ton of things for kids. They have campfires, pony rides, carriage rides, petting zoo, etc.
BWV & BCV are fantastic for close proximity to both Epcot & MGM, a very large number of wonderful restaurants and various nighttime entertainment from renting old fashioned bikes to mini golf to clubs for the adults.
BWV and BCV are very, very similiar resorts, the major differences between the two are:
BWV has standard view pt rooms, which if you can get, will save you a fair amount of pts or cash. Overall BWV rooms have better views and a larger % have Illuminations or Fantasmic views.
BCV has Stormalong Bay, which is without a doubt the nicest pool on WDW property. If your kids like the pool, this could be a real BIGGIE! BCV dining areas seat more people.
Good luck with your decesion, you can't go wrong with any of the 3 resorts, they are all wonderful!