I am very happy with the high end J&M headsets, superior sound quality and modular in design allowing easier installs and individual componet replacement if required. As far as having a problem with the upper cord, we have had zero in two seasons of riding. What I have found is to always disconnect the upper cord from the lower cord when dismounting, and leave the upper cord connected to the helmet. Depending on the helmet you may have to remove or modify some foam to install. Positioning of the earpieces are critical to getting the best sound quality available. Mount the ear pieces so that they are close to but not touching the ear with the center pointed at the ear canal.