Propionate is my favorite! And as Powderguy said sustanon needs to be done ed or eod due to the ester breakdown, so i never found it worth a shit, however were talking about traditional sustanon like organon or karachi etc…. these days guys call many different blends sustanon and some of those blends are perfect just shooting a couple times a week, but traditional suatanon is best when done more frequently
As to your second part of the question, ….why is propionate my fave, less water, faster acting , which means when or if sides pop up i can have it out of my system and rectify the issues, and lastly i love propionate because it kicks ass with tren ace, winny and igf-1lr3, sickest cycle I've ever used!