IMHO the thing that makes BG2 better than BG is all the new character interaction. I just got through playing with Jan in my party and it made the game soooooooooo much more fun than the first two times I played. He tried to steal Boo from Minsc, annoyed the hell out of Valygar, and Anomen was about to kill him by the end. I was in the middle of killing a bunch of mind flayers and Jan decides to tell the story of "Ano the Crap collecting Orc". I damn near wet myself. The other character interaction ive seen that was really good is Viconia and Valygar. Does anyone know any other good party combinations for this kind of interaction? I gotta keep Jan and Minsc, but i want to try some other personalities.

try adding Korgan and Aerie to your team and see what happens