Aromasin is better, and this is why.
Aromasin can't cause Estrogen Rebound, if you don't lower the dosage of Arimidex over a couple of weeks, Estrogen Rebound can occur.
Aromasin in Studies improved Cholesterol Values.
Arimidex in Studies, decreased HDL (good cholesterol), and Increased LDL & Triglycerides....................................... JP
P.S.
And there you have the Important Facts.