5.1 channel headsets are crap... At least the Medusa 5.1 and Zalman 5.1 ones. Please, if you want headphone recommendations, go to head-fi.org: http://www6.head-fi.org/forums/
People here don't know jack about headphones. (Most of them anyway).
Neither do you. Not everybody wants top of the line shit. They just want headphones that have 5.1 capabilities so quit giving them links to exspensive shit they cant afford and dont need.