If you're looking for the best coaxial cable for HDTV transmission, we recommend RG-6. RG-6 has a larger conductor and thicker insulation, which allows it to maintain greater signal integrity.
RG-59 works well for lower frequency signals, like those in CCTV video surveillance. It used to be widely used in cable TV connections, but the demand for high definition quality has most installers leaning toward RG-6 for HD connections.
We offer RG-6 coax cable in pull boxes and spools from 500ft to 1000ft in length.