I have not had Jack Herrer, but I often hear mixed reviews on strains that are more difficult to grow such as Super silver haze which I didnt get right until my third round with it and Blue Dream which I have recently acquired and will try soon. I firmly believe that most strains have a sweet spot if you invest the time to learn where that is, usually through trial and error. You've just got to ask yourself, is the juice worth the squeeze when you have access to bullet proof strains that come out awesome and have little margin for error.If your trying to sell it then you probably shouldn't waste your time. I grow for personal use so I hate walking away from a strain before seeing its potential, especially when most stains available have won a cannabis cup or similar contest and must have been cultivated amazingly to have done so. Hence, proving they have potential. I don't have a large operation. I only use a 400 watt hps to keep my electrical costs down, plus I can only have 6 in bloom and 12 in veg at a time per the limits on my prescription subject to where I live. I feel like a real dweeb when I get a hold of a stain that has won comps and I cant get it up to par. Sometimes it takes a couple of rounds before understanding that particular strain, but I feel it is well worth it. Also I have found after taking on some of the harder strains, when you go back to one of the easier ones like the GDP (not Kens) pictured above you'll find yourself feeling like a fucking rockstar. On a side note, is there any difference in the lineage of the GDP to Kens GDP? or is it the same combo, just from a different breeder? I have a Kens clone and want to mother it, but am wondering if there is any difference. :S4: