I am having difficulties choosing because of minor prolactin from deca years ago. I was wondering if maybe i should u letro instead of arimdex because mayb it will get rid of the slight prolactin i have? No lumps or tenderness...just not flat. But i want to make great gains from the sustanon as well....so is letro out of the question because it kills my estrogen level. I have a great diet so...could i still make excellent gains if im eating good and using letro...if not...i guess its arimdex and prolact nips.