After all this drama, I'm still not sure PRC ever even HAD a studio. They finally bought a place in 1943 but who knows how long they had it or if they made many/any movies there. I don't think I ever heard any studio in Hollywood ever referred to as "the old PRC studio" -- in fact, I'm pretty sure I have not.

So let's declare Monogram the bigger studio, based on the fact that PRC's was quite possibly non-existent!