BBB
Well-known member
I've never heard of COP or 6-Bromo before. If you're looking for estro control, take a gander at MAN's Nolvadren-XT.
Good luck on adding PR-XT to your stack.
Nolvadren looks like a decent product. 6 Bromo works well and its more cost effective. COP is a pretty intersting product. You might what to do some research. I often stack it with CM.