We have been to both TL and BB, but we love TL the most! It has the wave pool with very BIG waves that you can body surf. There's also the Shark Pool that you can swim with tropical fish and of course, sharks! This really impresses my students in elementary school when I tell them I've swam with sharks! LOL They have a long 'lazy river' ride with tube floats that I absolutely love (it's longer than BB's). There are several slide rides with tubes. There're also three slides that are not long or steep and are really fun, but you don't use a tube on these. It's much more laid back than at BB, because the slides and water rides are tamer. We end up staying at least 4 hours every time we go and most of the time much longer.
The only water ride we like better at BB is the family raft ride. It is much longer and more fun than the one at TL.