I am on it right now. First time for me. My cycle went this:
Weeks 1-4 Primo and hdrol
weeks 4-12 Primo/EQ/Masteron
I am on week 7 right now and I am up 15lbs. Strength is up 15-30lbs on all big lifts. I love it. Not many people use it, but I don't think I will ever do a cycle without it.
Everything I read the gains are a bit less than a let's say test/tren, but easier to keep the gains. Do not loose that much during/after PCT. I will let you know. Keep in touch.