I just purchased A Sennheiser 650 Headphone (supposedly the best) for late night listening ( wouldn't want my m80's to wake the neighberhood).All the headphone forums recommend replacing the Sennheiser plug in cables with high priced ($150-$250)replacement cable for optimum sound quality.Does anyone that has enough experience with cams know whether this is the same hype used to promote high end cable and interconnects? I don't mind spending the money if they really work,but I really don't feel like dishing out that kind of money for a piece of worthless junk.