The Sinbad stunt show isn't bad if you want to take a break from the heat and sit down for a bit.
At Sea World, it really is mostly about the animals. The shows are very entertaining, but please heed the advice and get there early for good seats (or just to get a seat, for that matter). My personal favorite show is Blue Horizons, all of the other adults in my party prefer Believe. And if you like thrill rides, don't miss Kraken.
BGA has good animal exhibits as well, if you want a break from the coasters and other rides. The view from the sky ride is beautiful, and the Serengeti Express is very interesting. As far as shows, I did not see any this trip. But some of my family did see Katonga, and scolded me for not seeing it, too. They said it was a very well done show.
Anyways, I hope this helps some. I am possibly returning again in June (don't usually go to Florida in the summer, but may have an opportunity to travel with extended family). If I return, I may have more insights. Regardless, I hope that your trip is very pleasurable.
Walt Disney World's Magic Kingdom
Disney's Animal Kingdom
Disney's Hollywood Studios
Disney California Adventure
Universal's Islands of Adventure
Universal Studios Florida
Universal Studios Hollywood