Which is the most uncut version on the markets? (+ a quick review)

I read somewhere that the theatrical release was 91 minutes. Is that also the longest ever released on VHS/DVD? Or should I be searching out for a longer edition?

PS. SPOILER WARNING!
I don't know why some trash this original and praise the remake. I saw the remake first and it was OK but...This one had more tones and colours to/in every aspect. And even though remake-Junior's death was powerful and dramatic it was nothing compared to the original. Yeah, it's horrific that a father stabs his own son to death while claiming he loved him, but it's far worse that a father gets his own son to commit a brutal suicide, by just verbally demanding him to do so. I was like O__O when I heard the gun go off. I did NOT believe he'd do it. Or perhaps I just didn't want to because I really liked Junior's character in this original. The actors was great and the character sympathetic.

I think this was very well done seeing to all this is supposed to be. Deserves its title of a classic. I enjoyed mostly the bits before the woods scenes and after they arrived at Mari's house. As in the torture-rape-murder bits that kinda are the "trade mark" of the film, were well done but everything else appeaed to me much more. The only scene from the woods I like more than the out-of-woods parts is Mari's death from the moment she starts vomiting and then walking into the lake. Krug & co.'s remorseful and sad faces are probably the first thing I'll ever remember whenever I hear this movie's name. Such a powerful scene, to point out the human being inside the monsters.

A fine film I really might end up buying...But if I'm gonna do that I'd rather have a version as close to the director's prefered cut as possible. Hence, which is the most uncut version released?