MAN OF STEEL - Alternate Costume Designs for Superman and Zod

I imagine there were a ton of different costume designs created for Man of Steel during the development phase. I really liked what they ended up using, but here's a series of concept art created by Ed Natividad that shows us what could have been. They include different Superman and Zod costume designs, and one features our hero sporting his classic red underwear. Click on the images to enlarge. Do you like any of these more than the ones used in the film?  

Thanks to io9 for the heads up on these!

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