Well I chose Spider-Man as a first choice because he's an actual person. Bruce Banner constantly whines about having super powers (like most teenage girls and I have no clue why), Wolverine is badassery incarnate to the point he's just stupid. There is really nothing in the world besides Magneto that can kill Wolverine so the suspenseful build-up is just redundant and boring.
Captain America is cardboard. I like Thor, Thor is awesome..... but he's no spider-man. And Gambit....... well I like Gambit, he's funny. But he reminds me of every person I've ever disliked in my life, just with a funny accent.
So go Spider-Man!