In the end, you have to decide on your own whether to watch the movie or not, unless someone whose movie opinions mirrors your own gives an opinion you trust. Don't pay for 3D if you're unsure. I thought this movie was great! They didn't need to use too much of the movie for character setup, because of the other movies (smart move). The characters fighting amongst each other was amplified due to loki's staff being on their proximity, increasing whatever fears & distrust was already present in them. The characterizations were right on. Bruce Banner heeded Tony Stark's words to him about being able to control himself & that's why I believe he exerted more control in the Hulk persona. Shawarma, anyone?