Blue Jeans interconnects are pretty darn good. They’re not the ultimate in resolution or focus, but they are smooth and natural and throw a nice soundstage. The sound, to use a vague, subjective term, "normal." And you can easily order custom lengths. Their Belden speaker cable is okay too. For a second system, the combination will "let the music" out without a lot of expense or fuss. ;-)
For my main system I use Harmonic Technologies. I buy used from eBay or Audiogon or USAudioMart. As long as the seller has decent feedback I’m not too concerned about being ripped off. There’s really no reason NOT to buy used cables. They don’t "wear out" and people get rid of perfectly good stuff all the time in the quest for whatever they think they need to hear. ;-)
If you want high-end cables, the Cable Company's lending library is a pretty good way to try a variety of things.