I saw this with the lady. I preferred this to the first one, actually. There were two elements that I particularly appreciated:
- A better villain. Loki was pretty lame. His whole thing is that he's a nerd who never got over being envious of his jocky brother... that's not that interesting to me. It makes him more likeable than the heroes without coming off as particularly threatening or tapping into some kind of aspect of the id. He's not especially powerful, just petty.
Ultron was more like a shadow of Tony Stark, and this was much more interesting to watch. It also presented a dark reflection of the zeitgeist (much like Bane or the Joker did at the time), and that also helps. Notice that he boasts of how he has no strings, and can't tell the difference between ending the world and saving it....
- The romantic subplot between the Hulk and Black Widow. I think of all the Avengers, I've always found the Hulk the most relatable. I think that character is an INTP. I found the conversation about not having children to be interesting. And then, there's the image of the ballerina. (What is it with gory or violent ballerinas within the last few years? Hmmm....)