I personally ran both at 400mg/week two seperate times. On ace i felt it stronger, better strength, vascularity, fat loss, etc. On the Enth what i mentioned was all to a lesser degree but still there. Neg sides were the same for me either way. I shot the ace eod and the enth like i would test enth, evey mon/thur.
Also since most if not all labs upcharge Enth so high and you actually get less compound for ur buck due to the high ester, Ace is by far the better option imo. For me at least, doubt i'll ever use Enth again unless say i go on a week long trip and want it in my system or something.