I don't think anything except a lot more hair loss. Primo being a DHT derivative is much harder on the hairline.
Equipoise is stronger on a mg per mg basis and not highly faked. Also, I think that Equipoise is a little better for size than Primo. I like both of these drugs, don't misunderstand me, but with the Primo fakes and the word that Primo is on the way out, I'd opt for EQ.
NN