We have been to CSR, and CBR, and prefer CSR:
Better pool area, longer slide, area not so broken up (easier to keep an eye on the kids), and hot tub, larger( you don't feel like you are sitting on some stranger's lap)
We felt the bus service was better (seemed like it took forever to get aound CBR)
CSR is big, but it didn't seem as spread out, as CBR.
CBR was a bit too big for our taste. Luckily, we were close to the main pool, and food court, but if we hadn't been, I think we would have been unhappy. THe bldg we stayed in is now preferred, and costs more/night.
But to be fair to CBR, the tropical feeling was very relaxing, and we preferred the food court here.