Im not cocky. I am being straight. You want me to bullshit you?
As said above, insulin sucks.
And as far as IGF1 goes, I said IGF 1 LR3.
It is much longer acting, stable and so easy to get everywhere on the net. If you reconstitute it wrong then it sucks, or is worthless.
You are going to get way more bang for your buck with IGF1 LR3. I personally have taken , and the pumps alone were worth it, IMHO.
Honestly there is not "REAL" answer to you question because Insulin has never been prescribed as an ergogenic aid, so there is no baseline, no studies, other than what has been done for diabetics. So if you do find info with will be anecdotal evidence from a bro.
Good luck man and no hard feelings , I just don't want to give you advice that I would not give myself.