The Brooks Pro suffers from some very short rails as far as adjust-ability goes, I could never get it back far enough on road bikes. It also tries to overcome the big nose problem with more of a hump rise in the middle, you either like it or you don't. I got comfortable with the B17N over time on a commuter, and had one on a 29er. For the first 3 months it felt narrow, then it fell into a sweet spot. Now I can ride the N without a chamois, and I'm a fairly big guy. Personally, I've gone to SMP saddles on my MTBs, but they tend to restrict sliding around, you tend to get planted in one spot while seated ...you might regard this as a negative.