I think Selle Anatomica saddles address the setback issue. My concern -- and this may be due to the fact that I haven't tried all of them -- is finding a tensioned leather saddle with a flat rear section like the B17, but with the width of a Pro and an even more gradual taper from front-to-back. My Pro is great in the width department (I wouldn't want anything narrower like the B17N), but it's had this roundness to the top that my perineal region doesn't always agree with.