[Rataxes]

Definitely, not only do you get a better story and a more convincing villain, you also get to freely explore every inch of the area BG1 takes place in. Besides, there's always the charm of being super weak and having to retreat from a wolf pack or a bear. I also think BG1 did better with some small, yet important aspects like the narrator voice and character models.

Finally, you'll also understand a lot more about the characters and the story in BG2 if you've played the original.