First of all, anything near $5K is likely no secret. Second, the need to spend anything near $5K for cables that will sound "best" in your system is, IMHO, totally fallacious. That said, Dschultz makes a good point about "no best".
As a side note, I'd wager the Ridge Street Midnight Silver Edition could be the best kept secret in terms of a quality to recognition ratio. Doubt it will stay that way for long, though. And, no, I am not affilated with Ridge Street.
BTW, who let the cat out of the bag?
David