Great answers from everyone so far...
I personally like Prop for this reason solely, my body responds far better to ED injects and I get far less Pre-gyno symptoms and acne. I do like the water retention you get from a slower ester, being naturally lean, I can never get too too puffy, but again, if Im hitting 200-400 mgs of say cyp/enanth per shot, I get far more sides from that and then have to run other ancillaries to control it.
I ran Prop at 700mgs per week, and loved it, great size and strength gains, and I liked site injects, though alot of users argue there is no such thing, I noticed great site inject gains.
The ED shots did get old after about 2months, I felt like a pin cushion and keeping a consistent schedule every day was tedious.
For this reason I prefer Sust. I absolutely love the Sustaplex by Axio, or if you have any of the old legit BD's they were awesome. Other than that Karachis and Nile ampoules are unreal
IMO opinion Prop or Sust you cant go wrong.