Iron Man 2

Well, the voting says that the next movie you want to talk about is Iron Man 2. So the question is 'What did you think about Iron Man 2?'

I didn't see Iron Man 2 yet but my brother did. He said that it was a good movie and might have been better than the first. But my friend (the same friend who hates Avatar with a passion) says it was a horrible movie and that the first was better. What did you think of Iron Man 2?