After looking at your site and not seeing many fixed mt. bikes I thought I'd try it. I needed two brakes to ride most of the trails in St. Louis, MO. Including Castlewood, Chubb, Lost Valley, and my favorite The Ranch. All single track some very hilly and technical. I try not to use the brakes but, when you dig a pedal and knock your foot out of a clipless pedal going down hill, things get interesting quickly! Bunny hopping logs still freaks me out too. Thanks again for the great site.