One can run 4AD with RXT to get the test and block the Estrogen conversion, or M4AD with Nolva/TC for the same, an AI won't stop the Methyl Estrogen. You won't get the quantity of mass without the E, but the quality of growth and probability of sides are much better.
I like Test, who does'nt?,hence I like low conversion 4AD at high dose, but not Estrogen, never have, and certainly never will now at my age.