I use it, I like it, and I believe the test results from BJC.
Canare LV-77S is a flexible, but thick coax with a stranded copper center conductor and two bare copper braid shields, one right on top of the other. This shielding provides an extremely conductive path to ground--just 1.8 ohms per thousand feet, lower than any other coax of comparable size. We put this cable up against a whole slate of other coaxes in a side-by-side hum rejection test, and it performed best of all. It is thick--.303 inch in diameter--but is more flexible than other comparably-sized coaxes, and therefore easy to route around obstacles if you're doing in-wall or in-conduit cabling.