stacking phera-tren or phera-epistane?

[gymfreak2]

hey guys..
do u ppl think stacking phera n tren wud be a better idea or phera n epi? keeping in mind that the goal is to gain muscle size.
also.. i dont know much abt tren. the label of xtreme tren says : "JUST FOR men looking to be bigger, leaner, harder, and stronger ". this is confusing me. is tren used for gaining muscle size or used more for cutting cycles?

thanks