Ya I think the 2 prods effect different ppl differently. With the orig derma some ppl get a surge in appetite and a huge test boost, some ppl get no appetite increase, it really depends. I think the Sustain is a more natural test boost and great for PCT but I think if you want something with the strength gains, mood enhancing properties and a real noticible force in the gyme the original is what your after. I would say do the original if you want something that feels more like a low dose of gear, and then try the dermatherm when it comes out if your interested in a strong fat burner.