I think there is too much text on the second one, it seems to pull me away from the focal, and i like the flow of the first one better.
Um...first one, I like B&W sigs tho' and I'm very partial to them. But I say the first one because the effects look better to me and its b+w...
I like the second one. The lighting is simply amazing. No more and no less. Although, you could have erased some parts of your C4D that was over the focal. EDIT: Actually, I would pick the first one if it had the same colors like the second sig. The effects are better on the first.
I like the first one, I think the black & white really conveys the guy's emotion. That said, I like the second one too, just prefer the first.