My favorite party is as follows...
Aerie (backup mage and cleric)
Viconia (cleric extrodinare and quite possibly the best NPC in the game after a stat booster or 2, standard stuff like strength equipment)
Edwin (Mage of Doom and Death and Killer of Sendai After Aerie Farked Up Something Ugly As a Confused Illithid)
Sarevok (Killing Machine and brokenly high stats)
Either Korgan, Jan or Keldorn here, depending on PCs class (if mage/thief, Korgan, if fightery/mage, Keldorn if not thief, JAN JAN JAN!