I strongly disagree. Arimadex is good for about 80% prevention of estrogen conversion. Even this can be too high as I'm now seeing. A little estrogen is ESSENTIAL for muscle growth and joint health. Letro through my research and experience will stop 100% of estrogen conversion. That means zero estrogen. That with a heavy bulking cycle will have you torn to pieces in record time. I use letro only for the last 2 weeks prior to a show with very light weights.
I'm going to .25mg of Dex EOD.
As far as just preventing gyno I'm sure 10 - 20mg of Nolva will be plenty.
As far as tren..... it doesn't aromatize to estrogen at ANY dose. Anti E's are useless. Cabaser is what you need it that case.