Though South Korea-based M.brdz' new Epicase for iPhone 4 ($32) is a fairly simple hard plastic shell in concept, a couple of things help it to stand out from the masses. First, there's the artwork, which comes from a collection of Korean artists who have a lot of talent -- we actually liked some of the prints on the backs of the shells quite a bit, and there are lots to choose from. Second, there's actually volume button protection, which is rare…
