Hi there, We've stayed at CBR and CSR and at BC. We liked the food court at CBR - alot of walking to get from room to main building. The Marketplace dining at CSR is okay, it was quieter than CBR (convention centre-so tends to be more adult oriented) but the pool was quite nice.
BC is awesome (we stayed on Deluxe Magic Plan last time-Gold addon this time). Food is included-so we had character breakfast at BC each morning-steak and filet mignon and lobster (Yachtsman Steakhouse for supper) and you can't beat their pool (it's a water park in itself).
My opinion: If you have children and want a nice place to stay and eat - choose CBR. If your kids are older or you are alone -choose CSR -different atmosphere, quieter, nice pool.
If you are going to spend alot of time at your hotel or resort pool and take in all the extra amenities a deluxe has to offer-water sports, spa, fitness centre, tennis, bikes, boats and expensive but awesome sit down restaurants-stay at a deluxe.