Batman suit, hands down. Superman never had friggin gauntlets on his suit with black/gray lines running all over, also dislike the thick snake like texture of the Superman suit, other than that I love the MOS suit. Tone that stuff down a bit and remove the gauntlets and little lines all over and I like them both equally, the cape, S symbol, and boots and yellow ellipse belt buckle are all perfect on the MOS suit, they could be equals if that's done. But that batsuit is pure Batman.