Hey SoH! I'm glad you spoke up! Being a noted curmudgeon... I curbed my tongue. I can't say either much about it, haven't tried it yet, but I certainly will only try it if I can get a sample. And now a familiar rant: Companies marketing canna products of any kind, all think we are loaded with money and stupid enough to part with it when given the right spin. It doesn't help that some people try these products and go "WOW! Best shit I ever used! My plants look great!" Uh huh. Look great compared to what? did you do a side by side grow at least, one using one with and one without, minimum? People want to believe in the positive and don't take the time to examine things in a neutral, critical, manner, when they should be saying, maybe, we'll see.
Its also my opinion, and only that but, it seems to me, the higher the price tag, the more likely it is snake oil at the worst, or simply no better than anything else and marketing an item with a high price can seduce with smoke and mirrors.
That said, Mammoth P seems interesting. I would be hard pressed to be convinced its worth its price, or every commercial grower there is would use it.
And look to experienced commercial growers for what works and what doesn't. You won't find them using 47 bottles of nutes and "supplements"......