nfaguys,

I think the difference in impedance mentioned in this article is also what people were trying to tell you about. From the Blue Jeans website:

http://www.bluejeanscable.com/articles/impedance.htm

I buy a little bit better quality cables usually for the connectors. Too cheap cable has some really crappy connectors that will break easily on you. Cable quality is also relative to your system. In general, the "rule of thumb" is you shouldn't spend more than %10 of your total system cost on cables. There are other tweaks, such as power conditioning and acoustics, where you'll hear a bigger difference.