We've stayed at CSR twice, both times during Presiden'ts Week, one of the busiest weeks of the year at Disney. We've had great bus service both times. There are a quick five stops within the resort, which do not take very long at all. There were always plenty of busses and they were never full. For transportation purposes alone, I'd go with CSR. Oh, and our four year old loved it. They not only have one of the best pools on property, they also have one of the coolest playgrounds!