i bet it's good stuff. i gave it a look but i ended up going with the peace of mind organic stuff (5-5-5) and mixed it into gardner's gold soil.
basically i got sick of having to pay so damn much attention to my plants. feed this day, water that day. pain in the ass. i just want to look at my plants and determine if they are doing "good" or "bad", not hold their hands. i have shit to do. i was using dyna gro (which is by far the finest synthetic plant food i have ever used) and my results were good, but if i didn't keep on top of things i'd get the damn salt issues later in flower and keeping the leaves green required more effort than i was willing to expend. for all i know it's my tap water, but since i'm not a scientist and wouldn't know what any of the crap on a water report means i decided to try a time release type thing. i went organic to see if my salt issues were in my head.
long story short i'm 6 weeks into flower on my first run with the stuff and i've poured nothing but plain water on them and they are doing great. i still have some dialing in to do with ratios and timing a top dress, but i'm going to go down this road from now on.
i'm the laziest tightwad you'll ever meet, and i figured out a cheap and easy way to grow better pot than i did before, and i spend around 30% less per plant per cycle.
next on the list is to see if azomite will kick it up a notch. a lot of these time release organics lack micros so that stuff should round out the menu.
and although UB might take issue with some of what i've said here, his philosophies and tidbits are actually what inspired me to go cheaper and lazier. the organic deal was my idea though. i plan on moving in a year or so and i can't be bothered to figure out if something's up with my water to cause salt buildup so going organic was the next best thing.