it is kind of confusing that both programs have the same name
for what its worth, when my version was designed, I had never heard of the original version, at least not consciously. It was just a program designed to incorporate both mass and size gains into the same cycle, kind of a hybrid of a lot of other routines I had read. The routine has worked wonders for my size and strength over the years, transformed my physique pretty much....
But that being said, Bill Stars is the original, and I would never presume that my routine is better than his, hell, he is Bill Star. In my own experience, I felt that my version was a little better suited for bodybuilding purposes, but thats just my opinion. But I would also suggest to anyone who hasnt tried it, to give Star's a try as it has earned its reputation. And madcow really seems to know his stuff, especially around that routine
It would probably be easier to refer to them as 5x5, and needsize's 5x5 to avoid confusion