I've been wondering the same thing georgie. I've run primo with dbol and for the most part, I'm done with dbol because I don't like the water gain, dbol pumps and it makes my shoulders hurt. My first choice to stack with primo would be anavar, which I plan on doing. however, primo did cut down my sex drive down while on cycle. I got some proviron to run with the next cycle, but I'm wondering if some good ol test wouldn't suffice? but then again,i don't read a lot about primo/test cycles. I have seen primo/dbol or primo/eq cycles, but I thought they acted similar so I wasn't sure if it would provide you with the optimal "synergistic" effects that aas users strive for. I'll keep my eye on this thread to see what people recommend.