Storywise: Planescape: Torment vs Baldur's Gate II: Shadows of Amn

I have been playing PS:T quite a bit lately, and I've finally learned to deal with the gameplay and enjoy the story. I'm not too far in, but its been very enjoyable so far.

The problem is the game shits itself every time someone casts a spell, so until I learn how to fix that I may take a break from the game. (I tried turning off Hardware Acceleration, but my PC apparently doesn't want me doing that).

So story-wise I am wondering how BGII stacks up against PS:T. Since I have finally learned to deal with the older style engine, I think I'm willing to give BG2 a full play-through.