There's a lot of variables. The source is reliable but maybe my body reacts better to one brand better than the other, maybe I react better to the enanthate better, maybe I got great results since it was my first time on tren. There's a lot of variable and I can't figure it out. I don't wanna be on 600mg of tren but I feel it's needed for this brand. But I bought some of the tren I use to take so I'm gonna lower the dose and mix that in