Wide Performance Saddle needed

I posted this in the general bike forum, but think I will get better responses here: I am 6'4" 225lbs, and inherited my mothers wide child-bearing hips/ sit bones. The stock prologo kappa saddle that came with my CAAD 10 is WAY too narrow - the whole seat practically fits between my sit bones, and causes numbness pretty quickly. My sit bones measure approximately 125-130mm apart. I have a planet bike A.R.S. Standard saddle, which is a 170mm width, and the fit is pretty good, but also feels a bit overly padded for long rides. I also tend to bounce on it a bit due to the softness. Does anyone have experience that can recommend a more performance oriented saddle that is available in wide width? Most of them seem to be anywhere from 130 - 155mm, which is not that wide. My kappa is 142mm. I know this is an extremely subjective thing, but if anyone has recommendations for something in the 160-170mm range, that would be great. I do ride with aero-bars when I ride alone, but they are not extremely low.