Mac and Ulter are the kings man.
I have used AIFM basically since April of last year and I can definitely say that I've gained lean mass with minimal fat gain and zero water gain. I dropped the arimidex this past cycle and just used AIFM and I'm glad I did because the adex was just worthless because nothing changed. I had taken adex simply to reduce water weight, but the AIFM took care of that.
It also helps if you have any gyno flare ups during your cycle. I used it and even though I had puffy nips and knots even started to come up, but every single time they go away after I spot treat.
I'm addicted.