I always hear things "Like great cables make your speakers sound better" and other stuff boasting how important good high quality cables are. But the system I wish to purchase Is only $1200 dollars or so. Do I need to spend $200, $300, $400 dollars on high quality cables?? Thx Alex PS. What brand should I get, I've only really heard of monster cable. My local HT place was boasting about GXP or something like that?