I hear you, but I'm not sold on HGH as much as i'm sold on the IGF. From my perspective HGH works on muscle developlment through the IGF. Personally I can understand the HGH route at HRT dosages but once dosages are raised HGH can manifest itself in too many sides. Since many take HGH for muscle related benefits IGF is prob a better choice.
As for the use of IGF, there is an array of arguments on dosages and lengths of time, I personally like 30 days on 30 off. From my research after 30 days IGF is practically lost its potency. Yea some ppl take it up to 50 days but the gains are minimal at best after 30 days. Also, IGF does work in the fat loss department or at least keeping fat gain at bay on a bulker cycle.
The IM injestions are not better than SubQ. With SubQ the entire body gets the benefits not sure if the absorption is as good IM BUT I do agree that it will affect the local region intended to grow.
This is my take on this, so I'm sure many will have different opinions with this.