5 x 5 Roto with OBP instead of Average. $260 Auction Allowance, Which five to keep?

Strasburg - $14
Scherzer - $9
Medlen - $5
Carlos Santana - $16
Adam Dunn - $15
Ryan Howard - $9
David Murphy - $5
Rafael Soriano - $5
Todd Frazier - $5

Strasburg and Medlen are no brainers for me. I think Scherzer is also close to a lock, though I hate the idea of keeping so many pitchers. Santana and Dunn both see a large increase in value because of high walk rates while Murphy and Soriano will be tremendous values at $5 if each has a starting gig.

Of course, the trick is balancing value achieved by the player vs. how much they'd really go for at auction, i.e. David Murphy would likely produce $15 or so in value but is highly unlikley to go for that much.

Thanks for any help.

I would take the first five. The last three are good but not good enough to keep IMO. Soriano and Howard have way too many question marks. Maybe worth getting at auction but not as a keeper. Murphy doesn't bring enough to the table to warrant keeping.