im comparison subq

I’m not super lean but I’m not overweight or anything. Is 29ga 1/2 needle enough for IM in the thigh or should I use a 1inch?

Understanding that the half- life of Enanthate is shorter than Cyp, if one is dosing 2 or more times a week IM, is one better than the other, less side effects etc...?

Lately I’ve been injecting daily with a 5/16 (8mm) 30G needle in my deltoids. I wonder if this is still considered a shallow IM injection or rather subq? I’m fairly lean (14%) and my shoulders are muscular from heavy lifting for years. Any ideas?

Background: I have been on TRT for about 15 years. I've never really struggled with TRT but I was always tweaking my protocol like many do. The past several years I have been really dialed in well and have not messed with my protocol at all. That protocol has been injecting 24mg shallow IM...