Hi OP. we stayed at cbr in April last year and CSR in June last year. We enjoyed both resorts. My boys were 2 when we travelled.
At cbr we stayed in a pirate room and loved it. I really thought my boys would have cared less but they seemed to enjoy the room, playing with the pirate ship beds. I highly recommend these rooms if your kids like anything pirate. I preferred the pool area much more here than CSR (although in early February you may not get any pool time). My boys loved the pirate play area with the water features and small slides. I loved that it was gated and that they enforced the height limit of 48 inches. The main pool has 2 slides and zero entry and is just beautiful. Food court was average, we had no trouble finding a seat but we didn't do breakfast here. The grounds were gorgeous and even though the resort was at capacity it never felt crowded. It was a very relaxing resort for us.
You are already familiar with CSR so I don't have much to say there. For us, we preferred cbr because of our children but if we were to travel as just adults or if our kids were older, we would pick CSR. The main difference for us was the theming of the rooms (loved the pirate rooms at cbr and I have a huge Nemo lover) and the pool at CSR to us was little kid unfriendly (no zero entry, deep pool, and water play area that seriously lacked). But it does have a really great slide for older kids. We also really liked the food options at CSR much better. We had more space in the cbr rooms with the full size beds and the slightly bigger room if that matters.
I think which ever resort you choose will be a fantastic vacation. Happy planning.