These posts come up at least once a week on the training board.
The only things cool about Mentzer were his size, and some of his stolen theories. He was basically a parrot for Ayn Rand (objectivism) and Arthur Jones.
Now the Parrot of Mentzer is basically John Little, but at least John doesn't smoke meth... (at least not to my knowledge)
You can try every training system in the world. They are all basically better than NOTHING at all....