Best Interconnects and Speaker cables

"Best" and "Sanely-priced" are all in the eye of the beholder, or in the ear of the listener.
Gregg Straley's realitycables.com illustrates one very high performance integrated suite of wiring if you buy new.
From my own experience I would recommend the optional oxygen free RCA connectors as a worthwhile upgrade while still maintaining your sanity.
I have also found that the original design of mini-priced IC's from Joemazzaglia here on Audiogon have been bargain wonders.
Having inserted both of these brands into quite a few systems of my own and of others it is a quality of letting the attributes of the system be more fully revealed that makes these so desirable.
You get to finally hear the sound which a system is capable of producing. It's always a joy to hear even more from your favorite known recordings.
Also, either of these designers will communicate before and after the sale, which is a plus. Their designs have remained basically stable or finalized for a number of years, a sign of getting it right.

I use the Pro Silway cables also and like them .
I also use Kimber Selects and Bifocal xl speaker cable and I heard an improvement.

Using acoustic zen cables with sim gear,very content.Very reasonably priced cables/performance value.(Using good ole silver ref 2 and hollow gram 2)

I have also been using the Acoustic Zen Silver Reference II IC 1.5m and Hologram II Speaker Cables 12' for a few years. Got them pre-owned here for under $1,500.00 and haven't found myself looking to replace them. I needed a longer run for the speakers here. 12' is relatively unusual,I've yet to see another pair offered at this length.