Short esters,long esters I inj eod no matter what the hell I take....unless it's tne etc.etc....I learned years ago....less sides from steady eod inj I get less sides...and make better quality gains! Imo if ur inj are bothering your day to day activity than u need to learn how to inj properly....scar tissue is the most common problem when inj ed or eod!....heat up ur oils before inj...it helps 100 times...also rotating inj sites helps a lot.....don't be shy to try inj in muscles u haven't tried before...