Well, it really depends on what you two like ~ Studios (to me) is more of a relaxed park ~ slower paced, more shows & attractions that DON'T get your heart racing whereas Islands is more on the thrill side, BIG coasters & lots of thrill rides.
Don't get me wrong, studios is LOTS of fun & has it's share of fun rides, but Islands is all about the coasters ! LOL
Jaws = Studios
Men In Black = Studios
Back to the Future = Studios
Spiderman = IOA
Duling Dragons = IOA
HULK = IOA
**did you consider getting a 2 park - one day pass & hitting the highlights of both ????**