woops i actually posted under my buddy's account at work.
i was really looking for an answer why to run it off the VC, but now i understand why i should run it directly off the valve cover. Since there is oil being pumped up through the head, thats basically the "final" spot where oil is delivered before it runs back down through the block. So running the catch can off the block would help remove some contaminant, but the vapors that are up in the valve cover would still be recirculated back into the intake.
So now my next question is, is it best to run it off the PCV or off the fitting on the right corner going to the intake?