The best version in my opinion is the PS2 greatest hits version, it has the bonus story Born From a Wish in which you play as Maria before the events of the main game.

If you're a fan of Silent Hill, and the second game in particular, I'd recommend you hunt down the Greatest Hits version, which is unfortunately much harder to find and is more expensive

Which is the best version of this amazing game

This isn't supposed to be a complete review of Silent HIll 2, although I would give it a perfect score because it's an amazing, horrifying, and fun game and my favorite, but I was just writing this to let everyone know that the Greatest Hits version of this game also includes the extra level where the character Maria is a playable character

Won't go into too many details on the plot, but will review the Greatest Hits version

Oh and did I mention all the endings, there're 6 total on the Greatest Hits Version.

Play the "Greatest Hits" version of Silent Hill 2 if you're going on play it on the PS2, as it includes the "Born From a Wish" minigame

silent hill 2 was awesome, and when they came out with the greatest hits version I had to get it