Wow, that is some reaction to HCG. I have read on another forum guys who do 50IU a day and got everything working again(got wife pregnant after years of AAS) but it took 8 months. I am more of the school of being consistant on a low dose and wait & see. (be the tortoise not the hare) Large pulses like twice a week 350-500IU was too much for me too. Now on just 100-150IU a day and I feel great, meaning I do not have the E2 sides. I do not care about the testicle esthetics as I never had huge balls anyways but thats maybe optics in comparison to the shaft.....lol...just kidding.
The main reason why I was/am interrested in the DHT derivatives is the minor E2 control they offer. So depending on my T dose I take 12.5-25mg of Proviron or add 10-20mg Masteron to my injections....no problems with E2 whatsoever. I understand it depends where you are to be able to legally do that. I never used an AI so I can not give you any advice on that.
When you say 10-20mg Masteron is that per day?