I think the differences would revolve around how well the gel is absorbed and how much is converted to DHT. These parameters vary greatly among individuals, so you would only know by trying it. In my case gel was poorly absorbed and a relatively large amount went to DHT; going to injections made of big difference. Other guys might see little difference. I don't think there's going to be much interaction between the hCG treatment and either of the primary testosterone-boosting treatments.