[USER=38590]@readalot[/USER] has made some excellent comments on the different elimination half-life for IM versus subq.
[URL unfurl="true"]https://www.excelmale.com/forum/threads/for-those-who-are-struggling-on-trt.25592/page-7#post-229762[/URL]
This difference may explain why some feel better on one versus the other. I definitely prefer the convenience of subq for daily injections, but after hundreds of dailies, there is no doubt that I subjectively feel better on shallow IM in delts. However, I don't consider IM a realistic option for daily injections for the next 20 years of my life.