controlling e2 can be a nightmare. there's no surefire right way to do it. blood work is the key. aromasin is better than arimidex because you don't get an estrogen rebound. most people on 200 test wont need an AI. id do some aromasin and get bloods. aromasin dosing is really person dependent man. I'd start with 12.5 mg e3d and go from there. again, blood work is a must here. sweet spot for e2 is 20-30 units.