My pick is next and I wanted your guys' help.  It's a 24-team sim league (DMB) and I have all my positions and rotation filled, so I'm just prospecting (although I do have LoDuca at C and he's old).  

I'm deciding between a C or an SP.  I've narrowed down my choices to: Iannetta (B+), Montero (B+), Phil Humber (B+), Jason Hirsh (B+).  James Loney (B+) is also available.

Would appreciate any help and thoughts.  Thanks!