I think you'd be happy with all 3. Assuming they hit those projections you'd either have an ideal 2 hole hitter, potential MVP, a potential gold glove CF w/ enough power to hit 30 homers, or one of the best hitting catchers in your world, with enough arm strength and accuracy to limit the opponents stolen bases, so I don't think you can really go wrong.
However, take a look at their current ratings and determine which one is most likely to meet or perhaps even exceed your current draft scouting at key ratings, and which ones are more pie in the sky. Then take the guy that is most likely to meet those ratings.
all being equal, I agree with Mike, I'd take the catcher, as I think he gives you the most value in a potential short playoff series, but I don't think you can go wrong in the long haul with any of these guys as a fixture in your 8 man lineup.