CBR lover here! So my response is very biased toward CBR!
We've stayed at both, after a friend raved about CSR. We then returned "home" to CBR.
Love the theme of the Caribbean, we have never stayed preferred and always got our request of Aruba 51, 52, or Jamaica 45. Short walk across the bridge to OPR (longest is 6 minutes) and the pool and food court.
Shutters is a surprising hidden gem (no lie) and there is no additional upcharge on the counter service as there is at the Pepper Market at CSR. And we genuinely like the pool.better at CBR, although the slide at The Dig IS nicer.
We always feel that even though the resort is spread out, (maybe because it is?) We never feel crowded there.
it really boils down to personal taste. We have never had a bad experience there.