I'm about 140mm center-to-center, and ride a Specialized Ruby 155 on my go-fast road bike (where "go fast" is a relative term). When it comes to Brooks for anything except a really upright position (cruiser/city bike) I'm happiest on either the B-17 or the Finesse. I've ridden the Finesse on leisurely century rides with no real issues--on a bike that had the saddle almost level with the bars. (I switched to the Ruby when I bought a "race" bike that had more saddle to bar drop than I'd had previously...because I needed a cut-out at that point.)

I also have a Team Pro (in white) on my singlespeed, but I rarely ride that more than a few miles at a time so I can't speak to its comfort over any length of time.