Cap 2. No question for me. As soon as I left the theater I wanted to see Cap 2 again. Although it was an amazing thing to see the payoff for all of the hard work, I haven't seen The Avengers since opening night.
Watching the sneak peek that was included with Justice: War kinda pissed me off.
Why change the relationships of the characters in such a fundamental way? It was always Tim that had a problem with Damien. But, of course, ever since the launch of The New 52 (which I like a lot of) Tim has been treated like crap. Either stuck in one of the worst books or completely forgotten.