4141 Iron: Defensively more stable than other versions. Wingers should have a preferred foot for the side they are on.
442 Home/Away Editions: Home pushes the opponent to the outside to avoid counter attacks, whilst your team play through the middle. Away let's the opponent come via the middle but presses high and counter attacks.
Kung Fu 424 v2 A little more defensive and requires the central midfielders to be very well rounded.
Shaolin 424 Much more attacking style of play with offensive full-backs.