The only difference(s) between RG6 and RG59 is the thickness of the insulating material, size of the core wire, and the type of foil shielding used. RG6 generally can produce a better picture. Both are 75ohms. RG6 is also typically plenum rated, which means if it ever catches on fire it will not produce a toxic gas while burning. There is also Quad shield RG6 but thats kinda overkill for a tv tuner.