My personal advice, for what it's worth, is to get the best wire you can afford for the left/center/right speakers, but save some money on the wire to the rear surrounds. My home theater setup uses Kimber Kable 8TC wire for the front speakers, and a Monster Cable 12-guage "zip cord" type wire for the rear surrounds. Since the rear speakers are going to provide ambience and fill-in sound, it is not necessary to spend megabucks on the wire.
Best Home Theater Speaker Cable
Any suggestions on the bests speaker cable for home theater applications? Minimum 15 feet in length for the front channels and 40-50 feet for the rears. It seems as though most of the speaker cable on this web page are 8 feet or shorter. Any input?