Mike, another thing I just thought of. Most of these studies are done in women. The next thing also to keep in mind, is that most of the studies state the % aromatases inhibiting, as well as the % decrease in the circulating estrogen levels WHEN STEADY STATE bloodlevels are reached. In Arimidex, this is after one week of full 1mg dosage per day, in Femara's instance, after2,5mg per day that is only reached after 60 days. The point here is that , if 80% aromatases action is inhibited, 20% is still active, meaning conversion from testosterone to estrogen is still going on. The more testosterone is available, the higher estrogen CIRCULATING values will be in the blood. I think what these studies don't take in consideration, is how long you need to use your dosage until there is no or very little ciculating estrogen left.
Also keep in mind, that you do inhibit the conversion by 80% and the circulating estrogen left over, you continue to metabolize that estrogen, the longer you metabolize it at higher level whilst still on the SRM, the less there will be circulating. I will have to check what Arimidex's half life is, but it is short enough to warrant daily dosing. Your cycle might provide little estrogen production, and/or you may genetically not convert that easy, that you may get away with 0.5 mg per every second day. Others may not.
I think the more we can analize the information, the more we will start understanding these drugs. So, let's share info !
Knowledge is power!