This week, Co-Optimus will mix up the Co-Op Classics formula just a bit. It has certainly been a huge news week, particularly with the announcement of another class, the Wizard, in Diablo III. Much as the original announcement of the game did this past summer, this got them to thinking about the original Diablo games. Obviously, co-op was a huge factor in the success of these games. So which class combinations are the most effective?