Looks like Joseph Gordon-Levitt and Paul Rudd are the top two frontrunners to shrink down in size in Ant-Man. Variety reported this little bit of news today, stating that the two actors have been meeting at Marvel Studios. Ant-Man of course will be directed by Edgar Wright, and some even pondered the fact that Simon Pegg was going to win the staring role, given their close relationship.
I personally would rather see Rudd than Levitt, but either choice is fine by me. Let me know who you think would be the better choice.
Source: Comingsoon.net