As others have said, each of the resorts have their fans as each family/traveler has different needs. They are all beautifully themed. POFQ and CSR "tend" to be quieter and favored by solo travelers, couples, and families with older children...POR and CBR "tend" to be louder/livelier and favored by families with younger children; they also accomodate families of five.
POFQ - smallest resort, one bus stop (but sometimes shared buses with POR), boat to DSp, new kiddie splash pad, for-pay recreation, almost always excluded from discounts
CSR - conference resort with "deluxe-lite" amenities (fitness center, spa, lounge, upgraded mattresses), option of Business Class rooms and Junior Suites (accomodate six), best pool area (largest hot tub, longest mod slide, QS/drink refills on deck), most central location with better than average bus service
POR - one of the better food courts, boat to DSp, Yeehaw Bob entertainment, paid recreation/carriage rides, sometimes shares buses with POFQ, option of Royal Rooms, tends to be highest priced mod
CBR - largest resort with seven bus stops, inconvenient front desk location, most quiet pools, well themed main pool with kiddie splash pad, option of Pirate Rooms, largest rooms with upgraded mattresses