The CBR is a moderate resort, spread out. There is a "quiet" pool at each of the 5 "Islands", and then there's the big pool. I've never known a kid who hasn't loved this pool, from toddlers to teens. As far as room size, the CBR has the largest rooms of any moderates, averaging 340 square feet. The other moderates average 314 square feet. The CBR was Disney's first attempt at a non-deluxe resort (other than Ft. Wilderness), and they went all out. The CBR has had a recent re-do to all its rooms. The beds are very comfy queens now (save the pirate rooms in Trinidad which are still full-sized beds, IIRC, and those rooms that have a single king size bed. Each room now has a really good 55" Samsung TV. We were last there a year ago, and despite staying at the Beach Club for one night (due to an early arrival due to Tropical Storm Alberto making landfall in the panhandle when we were planning to travel through the panhandle), the rooms at the CBR held up respectably against those of the BC (BC won, of course, and as you would hope, but the difference was much closer than one would expect).
The downside: Due to the exterior doors, and the floor plan with your windows next to the doors, so instead of having the bath area between you and the hall to buffer sound, you don't get that sound barrier at the CBR, which can mean you might hear people walking past louder than you would at the S&D, or at night a frog in the mood for love after a rainy day in the courtyard by your room.
The S&D should be considered a deluxe level, while the CBR is a moderate, so the amenities will vary. My advice: Go on YouTube and search for recent room and resort tours of both resorts.