In my experience with different Test esters and Tren esters, the ester is the end all be all for me. On Tren Hex, I get absolutely 0 side effects. I ventured up to 300mg with it and was completely fine with only the benefits. Tren enanthate I ran for awhile around the same dose and I had really bad heartburn and night sweats. The last time I ran ace I took it to 350mg and I had every side ever listed I think lol. Granted, I will say that I believe mindset and placebo effects often come into play by what we read and hear regurgitated by the bros on forums. I’m currently running Tren ace again and though it’s only been a week I’ve had no side effects aside from some light sweating day and night.
As for the Test, I’ve tried Prop, phenyl prop, enanthate, cypionate and Iso and each has it’s own qualities I like. The Iso to me has by far felt the best at higher doses. On enanthate and Cyp at higher doses I feel a lot more aggression and agitation day to day but I can run them without issue under 600mg. Iso i have taken to 1000 and tapered it back to 840 and I have had no water retention, no moon face, no acne, some slightly oily skin but that’s about it.
These are all my own personal experiences but I do believe that the timeframe it takes for different esters to “clear” and allow the hormone to release has a lot to do with side effects and how we feel. Just my opinion from my experience.