Really? You had to have a match up of choice when you read comics? Which one was it?
Like I said, I don't like the fights between two heroes, I prefer the "usual" fight good vs. bad.
Batman vs. Joker
Spidey vs. Venom
Spidey and Venom vs. Carnage was awesome
... stuff like that.
Ironman: Extremis was one of the best comics I have ever read, I also like the Batman comics a lot were he doesn't fight one of the villains.
Aliens vs. Predator is great though.