I've got a digital TV terminal box that has a Coaxial Cable out and an SVideo out. We use our home theatre for audio (digial out) that's not the issue. My question is, what is better picture quality?

Quick question, really... I picked up the combo s-video/composite cable from Gamestop for my cube (till I get the component cables), and for some reason the s-video looks like shit compared to the ...