Here's a comparison between the two versions:
* Length: The extended cut is about 16 minutes longer than the original theatrical release. This extra footage includes additional scenes that provide more character development and backstory, as well as some extended action sequences.
* Visuals: The extended cut was remastered for its re-release in 2010, so it features improved visual effects and sound design. The colors are more vibrant, the textures are more detailed, and the action scenes are more immersive.
* Story: The extended cut adds some additional details to the story, but it doesn't change the overall plot. However, the additional scenes do help to flesh out the characters and make them more relatable.
Ultimately, the decision of which version to watch is a matter of personal preference. If you want to see the film as it was originally released, then the theatrical cut is the way to go. However, if you want to experience the full version of the film with all of its added extras, then the extended cut is the better choice.