I'm a simple guy when it comes to prospects, I focus on this year (and maybe next year). In that context I say go with Chris B. Young. He is ranked the highest (or close to it) of the group, and he will play all year THIS YEAR in a great park in a young exciting offense.
The only other guy who I would think about is Lincecum, but its possible (not likely but possible) that you could get him in the next round. Also, he has less of a chance to play this year... and hitters are more consistent anyway.