DS5 absolutely loved TL!! He really enjoyed the beach-themed kiddie area (they even give them a bucket and shovel with the kids' lunch deal) and the lazy river, and there is a cove off to the side of the big wave pool that gets lighter waves as well.
We read up on both, and felt (like Jennyvelaz said) that TL had more for under 48", and that DS would be too young for the tween area at BB. (Though based on other posters, I will probably be trying it next time!)
Have a great trip! I'm sure either one will be fun!