Will increasing speaker cable AWG make a difference in sound quality?

I needed some slightly longer cables as a new amp wouldn't fit in my normal amp rack space and needed to be a little further away from the speakers. I saw the new version of Kiimber 8PR cables now using the "varistrand" design (varied thickness little solid core wires in each strand), liked the look and paid less than 500 bucks for a terminated 13.5 foot pair. They look great and sound great...10 AWG to each speaker post.