There's really no such thing as a "best" music cable, or perhaps a "better" sound cable connection, or in truth, a good "poor" sound cable connection or "high quality" music cable. The truth is that that a gold plated cable doesn't give you any better sound quality than a standard one dollar cable. If you want to get the best possible setup for your sound system, then what you should be thinking about rather than the quality or value of the cable itself is whether or not it fits in with your setup.
Getting the best sound is really just about how you want to set up. You have a number of options, here. In terms of technical quality, it essentially comes down to how many channels the cables deliver. To get more info about cables, you can buy high quality guitar cables online.
Once you've determined what sort of setup you want, an important thing you need to consider before buying your audio cables is the price of audio cables. That's all you need to consider. And on that subject, you might as well save yourself a little extra on the side and shop online for cables.
In short; if it is of the right type, if it is not frayed, if it is not snapped in two, and if you can plug both ends in where they need to go, then any audio cable is as good as the next one.
In other words, save your money and get cheaper audio cables, because when it comes down to the quality of sound, there's really no difference at all from one audio cable to the next.