Which of these guys should I use as my LFer vs lefties? (and thanks for the responses on the other 1/2 of the platoon question)

SteveMartin (a wild and crazy guy)  FredRedding  CesarLee  YovaniRios

Redding has been my CF.  Doesn't have the range for that, anymore.  I could play him at 2B.  Or I could acquire a 2B and play him in LF.  Would provide GG LF defense and pop 20+ HR's, if I played him everyday.  Could play him all the time do that at 2B.  Won't at LF.

Lee is a leadoff type of LF guy.  Fields his position fine.  Walks.  Not a lot of power. I was set to use him there.  Reconsidering.

Martin is a true triple option type of guy.  Homer, BB, or strikeout.  Would mash some and walk a bunch.  A number 6 hitter type.  Decent range and arm, scrappy glove.

Rios is a guy with terrific power.  Will not walk (only walked .011 at AAA last year). Basically strikes out and mashes.  So so range and arm.  Ugly glove. 
 Thanks...moe

Martin, by far. Redding is a nice utility player at this point in his career. No interest in Lee or Rios.

EDIT-- actually, it depends on what else you can do with the roster spot. You're going to roster Redding, and Martin's probably only about a game a season better than Redding. So if you have something better to do with the roster spot you could use Redding; if not, Martin.

Thanks dedelman.  I think I agree.  I've got my eye on a couple of FA's that could change the situation, though.