The above comment on Newton's Law is very appropo, and one of the most overlooked factors in our discussions of how it was "back then".

I went thru seven or eight saddles before settling - no pun - on Brooks. Still, it's the small adjustments that will make or break a good fit, almost as much as the material that the saddle is made from. Now, when you get out there about 50 miles or more, the superior attributes of leather becomes apparent over synthetics, setup notwithstanding.

All brooks saddles are not for all people: I use two different types, B17's and B67's - about as divergent a couple as you can find. Yet, both work for my long rides, including centuries.