OCOS is the very best speaker cable, at any price, I've ever heard. It's imperative, however, that you get at least a double run, or two cables per speaker (each coaxial cable carries both the positive and negative signals and are terminated with positive and negative spades or bananas, and the more cables, or "runs" you get between your speaker and amplifier, the more signal you're going to capture.
They have almost zero impedance, meaning that they lose virtually no signal up to 340 feet, therefore, you can have different cable lengths between speakers - a very convenient feature. As far as sound goes, they are absolutely neutral: if you don't like what you hear, then there's a better than even chance that something is wrong with the rest of your system.
Smw1950