I've heard trest=gyno basically unless you take an AI and SERM while on cycle? Thoughts?
A guy on this board said that he ran it at 120mg/day without any kind of AI and didn't have any issues so I think it's safe to say that it's bullsh*t. All of us are individuals, some people just handle aromatizing steroids better than others.
I always recommend to have an AI on hand, no matter what you're running (hell, it'd be stupid to NOT have one on hand - they are fairly cheap and if you don't need it, you can always save it for future use).
Even H-Drol can give you a gyno - gyno is a result of hormonal imbalance. All steroids are causing hormonal imbalance - that's how they work!
If you don't want to use research grade AI's, I'd recommend to go with transdermal formestane - I think that it's just as good as Aromasin. I like Formeron by Black Lion Research. I am prone to gyno and Formeron has been enough even when I was on high-ish doses of several aromatizing steroids (injectables and orals).
From research grade/prescription AI's I prefer Aromasin over Arimidex. It doesn't destroy your lipids like Adex does.