I ran HGH for 2 years straight until my source started selling me under dosed, media grade HGH in place if the good shit I was used to. If my source didn't start fucking me over, I'd still be on it now.
As far as gains, I only gained approx 3-5lbs of muscle when off AAS cycle, but had huge gains while on cycle. The only problem is that it's hard to quantify gains when multiple compounds are taken at once.
That being said, combining HGH with a "standard" AAS cycle yields ridiculous results in terms of strength and size when compared to an AAS cycle without HGH.
I believe it was in your HGH thread from a few days ago that I made a post today outlining my experience with HGH alone, HGH w/ IGF and HGH w/ AAS.
Feel free to PM with specific questions Arabian and I'll do my best to help...