Typically I would say that the difference between exotic cables and standard wire tends to be on a more psychological level. If you are interested in learning more, visit
www.avsforum.com and search for threads on this subject. One fellow even claims to have run an ABX double blind test between $1000/meter wire and a standard wire coat hanger and obtained results indicating that individuals could not statistically discern the difference between the two. In fact, I think he was even offering anybody around $1000 if they could discern the difference 10/10.
I have always been happy buying standard 12 gauge oxygen free wire from Home Depot at like $0.10/ft. Very cheap and it gets the job done.