It took me a lot of saddles over many years to find one that felt 'right'. Step one you know already, get a measurement- it will at least eliminate those saddles that will never work because they are too narrow, and provide a more fuzzy 'not wider than' size. I want a thin racing saddle, my bones say I need 150ish, and there weren't many slim thinly padded racing saddles that wide not all that long ago. It's getting better, with WSD saddles from most manufactures so you don't have to settle for a tractor seat unless that is what you want. I used to have a Brooks B68 and I liked it a lot. I just could not get over its weight, after spending so much to lighten the bike.. So I tried the mens saddles and they were all too narrow and they did not work well at all. I tried a few WSD saddles (Specialized, Terry and Sella San Marco) and ended up with a Bontrager Inform unisex one that they thankfully make in 154.

If your sit-bones really are in the 170ish area, try that Brooks; they are works of art, beautiful leather, and as they break in they get better and better. Kinda like that well worn pair of jeans that just fit perfect. If you end up more in the 150ish area, you have a wider range of choices. One thing I discovered though. At least in my case, the heavily padded saddles are less comfortable than saddles that are designed to support you by your bones.

Good luck in your search for the ONE.