I joined a grower's club on the Advanced website and I got the video of the challenge where Big Mike says for all the companies to meet him in a grow room and get it setled once and for all which of thenutrients grow the biggest and best. The club also emails you growers tips and stuff like that.I have used GH, Dutch Master, Canna and Earth Juice before. I had ok results, with all nutrients you have to pay attention to what you are doing and you also have to have your grow room set up right and sometimes your genetics is going to hurt you or help you too. When I started using the Advance d program it went beyond the fact that I get a heavier weight of crops and more THC. It is also that they have ways for you to fix problems as well as feed roots to make the roots do more, things you don't usuallythink of when you are looking at nutrients. As far as I see, Adv is the only guys who openly admit to being for us who grow mj. You look at this article and you see one guy is willing to be honest about growing. The rest of the companies play hide and seek, like they are ashamed of us grwoers. My loyalties are to Adv because of the results and they are honest.