Defense and Marking;
It seems from what I have seen that it is better to choice either Man Marking or Zonal Marking rather than leaving it on default. With default I consistently see two plays RB/RCB both pressing onto the same ball player (Opp LW) leaving others to run into huge space.
Of course this could be an issue with the pressing commands, but I would have thought that the players would be smart enough to know that although I want to press I don't want two guys running out to press the same guy, completelely pulling me out of shape.
Long Story Short;
Where have you found the most defensive success with regards to marking, pressing and tackling levels?