Funny, I went through the same thing. After trying numerous saddles, I narrowed it down to a Brooks and Selle-An. I tried the SA at a bike expo on a trainer and it was so nice not to hurt in the sit bones and all. It did feel "soft" but I'm not sure if that was because it was a demo and not adjusted to me, etc.

I went with the Brooks Team Pro S. Boy those "S" models have short rails! Anyway, not sure if the measurements you got are center-to-center or outside-to-outside. I measured my sitbones and came out 140 center to center and 160 outside to outside.

The Team Pro S (which is the same as the B17s) width wise fit beautifully on the sit bones. When I'm able to sit in center where the sitbones go, wow! No pain. Unfortunately the rails are so short I ended up pushing back and riding on that hard metal at the back edge. It has to go back for a B17 (same as this only with longer rails).

By the way, first time out that saddle was hard as a rock but once I loosened the front bolt 1/4 turn, world of difference. I know I said this before but wow-oh-wow when the sitbones are in the right place. For me to do this on this saddle though means I have crunch up and it feels like I have no saddle nose. Down hill I like scoot back but that puts me on the metal, not nice over bumps.

Good luck with your search.