Actually, most of this thread is BS . I commute 37 miles daily on a HT mtb & have ridden several 100+ mile ROAD rides on mtb's. I have also bombed down many a trails on road bikes before. Just because someone is on a road bike/commuter doesn't mean squat. I have known people riding flat pedals on older heavy a$$ mtb's that are damn fast. Point being:What one rides for commute/leisure makes no difference in anything. What makes ALL the difference in the world is the little engine that could....