How about the Diamond dual cam model. I was wondering if the dual cams were as quite as the single cam and I was wondering what kind of a valley the dually had. Do they really letoff 70%? I shot Bowtech duallys last few years and they shoot really good but there was almost no valley and if you creep a hair they would about rip your arm off. The short valley promoted good shooting but were a little hard on the shoulder. I would like to see a dually that was a little more shoulder friendly.