When it comes to HGH, it's much like coke or heroin....I hate to use this as an example but hear me out. 191aa is 191aa. What matters most is how pure the product is. There are a couple ways to test the purity....the purer the powder, the better/stronger the HGH. HGH takes a FORTUNE to make....the equipment needed is very very expensive
With AAS, you have a lot of variables. How clean were the raws? What oils were used? How was it prepared? GH has some similar variables...but if the compound is real 191aa, what matters to me most is how clean the powder is, how was it stored, etc. Brand/pharm names like Serostim are the best. You don't really have to worry about how it's been stored. Once you mix the powder with the water, the purity and strength all depend on you....on how you use it and store it. What kind of water you use, etc. Serostim is all I ever use...you only need to keep one bottle in the fridge at a time (they have a patent on this process). The rest of the cans can be left in a cool dark place until ready to use...so for the serious GH user, they don't have to have 10 kits of GH sitting in the fridge for the wife to yell or for the kids to see. lol
When I can't find my Serostim, I use Rips...real ones from a supplier where I have had it tested and KNOW it's GTG. Far too many fakes of Rips floating around....and two of them actually use real GH!! But do not compare to REAL Rips. IMHO!!!
/V