I don't understand how watching the movies in VHS is considered watching the "original" or "old school" version. First of all, the DVD shows the movies as they were presented in the theaters, which is what FFC's vision was. The VHS shows them in full screen, which is not how they were intended to be seen. Second, the DVD shows you a much clearer picture, which is how they were shown in the theater. VHS quality goes bad after several viewings, and after a while you're watching a blurry movie.

I don't know much about DVD rot, but the Godfather Trilogy doesn't have it, since I've watched it way more than 10 times. And any one DVD is only put out by one company (Paramount in this case), so it's not like there would be some GF DVDs produced by one company and some produced by another.