Never used Sust for trt and although there would be no issue I would prefer single esters such as cypionate/enanthate over a multi-ester T.
Regarding half-life (cypionate and enanthate), they are basically interchangeable.
I have used both and the majority of the time on trt has been Delatestryl (enanthate) 200 mg/ml strength.
Unfortunately, Depo-Testosterone (cypionate) only comes in the 100 mg/mL strength in Canada otherwise I would have no issue using it over enanthate.
Mind you because I inject strictly sub-q the higher strength enanthate is preferable due to the lower volume of oil to inject.
There should be no difference in the effectiveness/absorption whether you inject cypionate or enanthate sub-q/IM.
Although some men do prefer injecting IM over sub-q as they claim poor absorption/hitting lower T#s but this would be far from common and in many cases, I would be suspect.
post#5
[URL unfurl="true"]https://www.excelmale.com/forum/threads/injection-locations.22277/#post-192889[/URL]
*This is far from common and even then unless those same individuals have kept everything consistent such as protocol (dose T/injection frequency), same ester, waiting the full 4-6 weeks for levels to stabilize, testing at the true trough, using the same lab, same assay (most accurate) when comparing lab results for TT/FT between sub-q vs IM than I would have my doubts.
Trust me when I tell you that some of these same individuals making such claims as poor absorption/lower T levels have slipped up on one of the points stated above.
For the majority, there should be no difference in the absorption let alone the effectiveness when injecting exogenous esterified testosterone subcutaneously.
