Your body has to cleave the ester off to use the testosterone - it's not like you're getting a different form of test when you actually start using it. If you perfectly controlled for level stability with injection frequency and accounting for ester weight between the esters/carrier oils, there should be no difference in effect.
In practice it's difficult to do this perfectly so there will be some fluctuation, but I'm incredibly skeptical of any significant differences between them if you keep your levels relatively stable. Honestly, even I find it difficult to believe that people would notice a difference even between ED Prop and E3.5D Cyp when properly matched. Humans are very very susceptible to placebo and I expect that is most of the difference people experience.
There can be reactions to the ester itself, but I don't think that accounts for anything like the BP issues, etc. We don't have a ton of science directly comparing esters, but U, C, E are all pretty popular in different parts of the world for TRT and I'd be surprised if studies hadn't unearthed any of this incidentally, especially since things like BP are often among the markers being monitored.
In practice it's difficult to do this perfectly so there will be some fluctuation, but I'm incredibly skeptical of any significant differences between them if you keep your levels relatively stable. Honestly, even I find it difficult to believe that people would notice a difference even between ED Prop and E3.5D Cyp when properly matched. Humans are very very susceptible to placebo and I expect that is most of the difference people experience.
There can be reactions to the ester itself, but I don't think that accounts for anything like the BP issues, etc. We don't have a ton of science directly comparing esters, but U, C, E are all pretty popular in different parts of the world for TRT and I'd be surprised if studies hadn't unearthed any of this incidentally, especially since things like BP are often among the markers being monitored.
