Lighting is beautiful... Colors are alright. Maybe move the text in v1 down a bit. Might look better imo. (Just so we can see some background there)
all version are good i didnt notice much difference. i like the colours and the blue near the guy it really works...also the call of duty text looks nice in the sig.U could make some lighting near his face maybe but i think what u hve is preety cool to.