Having tried their products for a while, I think the prime PH is probably the best thing in there. It's a potent alkalizer in and of itself, although it would be interesting to know how much good it would do once ingested. The supergreens are O.K., but then I don't like what they claim against chlorella and spirulina. Too lengthy to go into here, but you can find out for yourself. It think these are wonderful detoxifying energy foods, and to exclude them from supergreens, and then disqualify them, seems to me to be just a dubious marketing approach.
The book, (which is next to me on the bookshelf as I write) is
informative, especially for those unfamiliar with acid/alkaline, yeast free, raw vs. cooked diets.
I really have nothing against the products themselves, they are certainly good products, but their sales techniques, ie. "the new biology", and other such things annoy me. It makes me think that people will say just about anything to push their competitive edge. But my opinions shouldn't discourage anyone from trying the stuff, because it's just that, a highly subjective opinion.