Why is it important to run an AI when on cycle?

[Macon_Bacon]

Its fine if its all you have available.

Rather that then nothing.

Aromasin > Arimidex > Letro (for on cycle estrogen control)

Arimidex can be harsh on some causing lipid, labido and joint issues. Its actually directly tooxic to the joints as well.

Why use Arimidex when Aromasin is so widely available and cheap?

I thought I had read in a pct post that aromasin is a suicide inhibitor to estrogen (thus killing all of it in your system) while arimidex will just inhibit the estrogen from binding to receptors (decreasing estrogen effects by 80%, this is just from memory so might be wrong). Above you stated we wanted some estrogen but not above 50ng/ml. Long story short, why doesn't aromasin completely deplete estrogen levels?