Good network cable for media player

I am currently using an inexpensive Wireworld network cable in my system. Could I benefit by upgrading my network cable? Opinions/suggestions appreciated. I'm not altogether sold on the cables that you plug into the wall.
Good old Leviton Cat5E patch cords are all you need. Make sure the rest of your network (jacks, premise cabling, patch panel, network switch, firewall/router, modem and all cabling are up to task.