I know a guy who blasted anywhere from 700 mg to 2g of gear for about 1.5 years straight, no breaks and he just came off with no PCT due to legal reasons. Apparently he's doing fine about a month afterwards, lost a little size but that's it. It probably isn't the smartest route but I was...
Let him make his own mistakes. He'll probably make great gains, feel like shit for a month afterwards and then lose most of his progress since it doesn't sound like he has great training/diet knowledge. There's no point in getting caught up in other people's situations if they are going to be...
Arimidex is binds itself to the aromatose enzyme prevents the conversion to estrogen.
Aromasin is a suicidal AI, meaning it binds to the aromatose enzyme and kills it. Because of this there is no estrogen rebound.
IMO it's easier to accidentally crash your estrogen with arimidex, but if you do...