If you can play it directly from the Blu-Ray or DVD, I recommend it.
Both discs have a “random ending” feature that randomly selects one of the endings. The version you see on streaming services or buy from download stores includes all three endings in a fixed order.
Using the random ending feature is the closest thing possible today to watching the movie in theaters. When it originally ran, each theater got one of the endings, assigned randomly. (I don't know whether any multiplexes got more than one.) So when you went to see it, you saw effectively a random ending—and different people who saw it in different theaters might've seen different endings!
[Edit: See comments for a correction! And a differing opinion on whether to watch a random ending vs. all three endings.]
