San Marco Aspide Arrowhead "gelaround" in 130 - it fits me.
The particular model was discontinued, so, thanks to Nashbar, I've some spares.
When the spares wear out, then it'll be time to re-analyze.
It's like shoes; the size, width, style, model all "count" - so does the last, material, and the artisan.
I've slimmed down quite a bit over the last ten years, and also moved to a more aggressive and comfortable position, hence a "130 mm" saddle is now just the thing, and the replaced saddles are each a bit wider going baaack in tiiiime.