I've been doing some reading and I would like to know what people's opinion are about Aromasin vs. Arimidex. I'm currently taking 12.5mlg of aromasin ED while on cycle. I've took aromasin for as long as I can remember being my AI of choice. But some of my buddies prefer Arimidex. Obviously they're both AI's and do the same thing except they have different ways in which they work. Just wanted thoughts on why people people prefer one over the other.