Rode the Kona 29er for a really long rails-to-trails ride a couple of weeks ago and decided it has to have a B67! I don't ever want to be in that kind of pain again. I'm going to save the MTB saddle on its own seatpost for times when we decide to do aggressive downhill riding, but this bike is usually used for long trail rides. The Brooks on my commuter is perfect, and my position is similar on the 29er. I rarely wear bike shorts on the Brooks and I never have any pain, no matter how long the ride. I had sitbone pain for the first few rides a couple of years ago when I first got it. Then the pain went away and never came back. I ride year-round so I don't have those "break in" rides at the beginning of the season.

Deb