I'm working my way through FF13-2, and I'm trying to decide what role the 3 monsters should fill. Of course some enemies may have recommended strategies but generally what 3 roles do you choose to fill with your party?

I Currently work with Ravager (Lightning), Medic (Green Chocobo) and Synergist (Yashinki?) but would it be recommended to use Commando, Saboteur or Sentinel instead for any role. What roles do the monsters excel over Noel and Serah?


In this vein, what is your recommendation monsters for each role? I have access to all DLC at the moment, but I have yet to enter Episode 5 due to side questing and fragment collecting.