that's a toughy, but I have to go with Universal, ROTM, MIB, JAWS, Simpsons, shrek, and better places to eat, and I like all of the different themes in universal better. the main reason though why I like it better, is because at night there's the 360 show, and that is one of my favorite things of all-time.
IOA is great I love it, can't go wrong with Hulk, DD, Spidey, Dr. Doom, Dudley, and JP, but Universal is just better.
Universal is my favourite as well. I could just ride Mummy and MIB all day. I haven't ridden Simpsons yet and am looking forward to the Rockit. I think it will be just about a perfect park for me after those!
However, once The Wizarding World of Harry Potter is finished, I just may change my mind.
Universal is my favorite........as a mom of a little one......this is the place where he can get and do everything .....well except of the mummy and simpsons ride...........
My kids didn't "want to get wet" on our IOA day (I know....give me a break).... and Spidey was down. Given those facts and with Express Pass, we were out of there in a half day. Weird. I couldn't wait to get over to US, to be honest. I just love it there, really embodies the whole US/IOA spirit for me, if that makes any sense.
We like IOA but absolutely love Universal.
Universal has the types of rides we love and the shows are fun. We aren't big roller coaster fans except for DH.