I always found that Minsc and Khalid did well as a team. Khalid moves up first, and uses his absurdly high AC (Full Plate, plus tower shield) to give them a nearly un hittable target then Minsc runs up and slaps them silly with a two handed sword.

If Khalid goes ranged, his team mate has to be Jaheira for no reason other than the utter awesomeness of entangle. Stops them cold, only affects enemies.