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?

My new Dell Inspiron 700m has a 7-pin female S-Video connector... my old laptop had a 4-pin, so that's what type my s-video->RCA cable is. Since the extra three pins are for ground and a composite ...