Everyone has inspired me to measure my sit bones, I did the flour method and then also legs over head and backed it up with a squat measurement and I have pretty narrow sit bones. 75 mm center to center. Now I understand why the gilles berthoud I have been on for just over a year isn't as comfortable as my old fizik's vitesse sport (154 mm x 265 mm) The Gilles is 160 mm by 265 mm but is about 20 mm wider where my sit bones land than on the Vitesse Sport. In other words the gilles has a shorter nose and a wider platform whereas the Vitesse stays narrower and gradually widens in the platform.
With that said, I just spend some time on the fizik's website, was pretty entertaining - they are now promoting a saddle based on the flexibility of your spine - I am a snake... I didn't see the vitesse sport but they have a vitesse tri saddle with similar dimensions.
I just went through our warehouse and looked at all the Brooks saddles, the gilles berthoud and the Zimbale saddles, don't have anything in stock that is as narrow and as short as my old fizik's so for now am going to put that back on my touring bike and do some more research. Will look at the ones you all are discussing!



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No chafing, save a little that was probably due to my being remiss in shaving (TMI much?). I have a little more arm and knee soreness than I'd expect, so I need to go adjust the tilt and move the saddle back a bit. (Getting the damn thing on was an exercise in frustration, so I put it where I had the SI.)
(Okay, I knew that part...) Or both.