I see Icewind Dale as Black Isle's ultimate refinement of RPG combat and gameplay elements, Torment as the ultimate refinement of story and moral elements, and Baldur's Gate II as a balance of the two and probably the masterpiece. Torment, however, is something very special in that no game had ever, and maybe no game ever will again, do what it did best quite as well. Other studios can probably offer the rest, but Torment was something truly special.