I'll assume W, K, SV, ERA, WHIP are the categories...
It really depends on your tolerance for risk. If you have no tolerance, L.Hernandez is your man. Wood probably has the highest upside and the most risk. I just don't think Moose is really that good anymore...just your average 4.00 era innings eater. Clement was erratic last year and tends to fade down the stretch. Mulder has some risk, but also a high upside on a great team.
So, with my risk tolerance being medium, I rank them as follows:
Mulder, Hernandez, Wood, Moose, Clement.