2 part question. do high end ethernet cables really make a difference? If they do make a difference would it effect wireless setups or only wired ones? Right now my set up is as follows. bell fibreOP internet 50mb download 30mb upload wired and wireless. I have fibreOP TV as well. I got one cat 5e ethernet cable going from the fibre box to the wireless router for internet, one cat 5e ethernet cable going from the router to a wireless bridge for the wireless fibreOP TV and a cat 5e ethernet cable going from the router to my Sonos bridge for my music and TV audio.