The simplicity of Jacks products really produces good, healthy plants for such a low cost per plant.
Tried Fox farms, which in all honesty worked okay. Basically went three bottles each run.. Just ran into few problems with deficiencies and at times over fertilization. Nothing a flush couldn't correct. Each round of plants costed me many times more in comparison to Jacks which was probably less than 5 $ from start to finish, if that. No deficiencies to speak of either.
Tried organic, but found it to be inaccurate levels when I would brew a tea. Either too hot (yes I cut it with water), or not enough. Definitely an art to it which one day I will try again.
I just think for the value and results, Jacks products are up there. I hear dynogrow is some good shit, and perhaps I 'll give it a go.
Yes different products can get you where you need to go, but why spend more on watered down, fancy labelled, expensive bottles?
Only other stuff I use is botanicalcare silica, as it seems like it improves stem strength (unscientific clone experiment, want to look into it more), and fulvic acid which I'm just using up and don't think I really need it.