I'm pretty much out of the race in my 16-team keeper league, especially with the news that Josh Johnson is out for the season.  I'm looking to acquire a good hitter for next year and am targeting Matt Holliday.  My strength is pitching, and my hitters are really weak so I am looking to use some of my pitching in the trade.  With 8 keepers, I plan to keep 4 pitchers and 3 of those will be Greinke, Johnson, and Strasburg.  For the fourth spot, I am choosing between Shaun Marcum, Jordan Zimmermann, and Chris Carpenter, and I am hoping to include the one (or both) that I don't keep in the trade for Holliday (or someone of his caliber).

So I guess the question basically who do you like best as a keeper for next year, Marcum, Zimmermann, or Carpenter?