Germans it is with their heavy cats, fast Messerschmidts, powerful assault rifles and semi-automatic sniper rifles. Powerful machine guns are also something that takes me to German side.
Though M1928 Thompson is something that makes me want to play as Brits sometimes or the American M1 Garand that will hit you target no matter what (Damn i really want scoped M1 Garand that would be my fav weapon).