never taken aromasin but apparently its better than arimidex
letrozole is king of AI because it inhibits higher % of estrogen gets you drier BUT! if you abuse your sex drive will suffer and FOR A WHILE too, i took 2.5mg/day + 20mg nolvadex/day for 2 1/2 weeks for gyno, which i got rid of fast and took me a GOOD 3 months to recover
arimidex is what ive used mostly in past cycles, keeps you dry
make sure you get legit AI/AE as in no UG bullshit, use pharm grade and if you cant try research chems