This is tough to gauge based strictly on value...
I'd lean slightly towards Jenks just becuse I view him as a very solid closer... Certainly top 10 or 12 in the league...
Garza is still a bit of a mystery... Will this be the year he puts it all together and finally breaks out? Or will it just be another up and down roller coaster ride?
I'd say I'll go with the proven commodity. Breakout pitchers (Not talking Greinke here, more like last year's Cueto, Volquez, Baker... etc) can always be found by doing your due diligence and stying on top of the young pitchers. Solid, proven commodity closers are tougher to come by, but of course you can always grab some cheap saves off of the WW.
So I guess I'm saying, that in a vacuum I like Jenks, but just slightly...
Help me out,
http://www.fantasybaseballcafe.com/forums/viewtopic.php?f=26&t=383045