Remember the variables, your receptors will eventually become saturated or used to a dosage...I used to get amazing results from 500mgs, but now that wouldn't so much as phase me....That has NOTHING to do with the brand in a case like mine... It is from years of using and abusing dosages...Granted the opposite is possible, getting shit and taking 2grams a day with no results.
I know several pros who use 2g or more plus a week, 150mgs of Abombs, etc, etc, etc....Most of these guys built up to this dose and are taking other items to counter all the negative sides you are going to get from a dose like that...
I have used UG brands that are better than Human Grade, so thats a myth. UG tren IMO is always better than any other version. I have never found UG primo that is as good as Human Grade. I have had many versions of TEST and SUST that are UG and superior.
If you know your brand you have no worries. If you don't you are taking a chance.
What brand exactly are you referring to??