Belden is a brand sold by Blue Jeans cable who also sells the canare wire. When you mention you only want to purchase the wires once, you do understand that a full set of speaker cables and interconnects by belden, canare, mogami , morrow, etc will cost you a few hundred dollars to try out. Canare and mogami are said to be the wires that are used by a majority of recording studies that record the music we listen to.
I admit I am rather budget minded at times, but many audiophiles over the years have liked these cables, and at their price to me its a no brainer to try them out. Honestly though, just my 2 cents.