We have stayed at both and each have their own unique vibes.
The POR is surely more romantic especially the AB section. I thought the food court was nicer, and the main pool certainly trumps the CBR's pirate pool. The resort felt secluded and quiet, and boat ride to DTD is really a bonus.
The CBR however was really nice. It was clean, the staff friendly, and the little beaches on the main lake are really pretty. My wife and I rented a surrey bike and rode around the lake which was really nice. If you could swing a water view and get a good location looking at the lake (not a pool which is still a 'water' view), then the views would be hard to beat.
Both resorts are large and spread out, and building selection is a big help if you want to be close to the food court and bus stops etc....
The only other consideration IMHO is what your taste in environment is. The CBR is all about white sand, palm trees, very beachy and tropical. The POR is very rual and woodsy in AB, it's just a matter of where you're from and what you like. We're from CA, so adobe and cactus is no big deal to us, so staying at the CSR holds no appeal, but because we don't have lots of woods and forest around where we live, we love the POR. But I have read reviews of people who were from a place where they had lots of trees and woods, and felt the theming of the POR was too close to home, and like the tropical setting of CBR better.
Hope this helps.
HAVE FUN!!!!!