Best Version: Original
This is a hands down non contest. What made the original so scary was not knowing who was tormenting the sorority sisters, or why. So what did the film-makers in charge of the remake do? They decided to take the one element that made the original so suspenseful and completely screw it up by dedicating a large portion of their remake to explaining everything with a stupid new Rob-Zombie-ish back story. Ergh.