aromasin will keep you less bloated than arimidex will because arimidex only suppresses estrogen where aromasin kills it... aromasin is the stronger of the two... i would always have one on hand no matter what cycle you are doing... i always use one to be preventative... you don't want to go overboard with it and its not intended to use to just get a dry look... its intended to protect you from too much estrogen but you don't want to completely kill it off either... so proper dosing is necessary for it to be effective, otherwise, like anything else, too much of something can be more of a detriment... you need to dose it moderately...