Joe Blanton (-0.4 fWAR, $15 million)
Sean Burnett (-0.1 fWAR, $9.5 million)
Ryan Madson ($3.25 million, didn't pitch)
Tommy Hanson (0.4 fWAR, $3.75 million)
Total: -0.1 fWAR, $31.5 million
Matt Harvey (-0.2 fWAR, $11 million)
Trevor Cahill (-0.5 fWAR, $9 million)
Cody Allen (-0.7 fWAR, $8.5 million)
Total: -1.4 fWAR, $28.5 million
The latter group, while $3 million cheaper, has been worth 1.3 wins less. Gotta go with them.