gonadorelin vs hcg

Is gonadorelin that much worse than hcg. I'm ready to sign up with peteruncaged and I thought they provided hcg. They are saying they don't,even though I seen a Peter support guy say they can get a script of pregnyl sent to local pharmacy. They emailed me and said they only provide gonadorelin as a substitute for hcg and they say it works same way. But I've seen many comments that gonadorelin is garbage. I don't want my nuts shrinking anymore than they are. Any insight would be appreciated.