I like the individual copper mesh shieled XLR cables from Blue Jeans cable, they run about $10/foot so it gets a little pricey to wire up seven channels. That said I do believe that even for short runs in a relatively "noise free" household the minimal upcharge for XLR vs RCA is worth it.

Of course Blue Jeans uses pretty ordinary cable made by mere mortals like Belden. http://www.bluejeanscable.com/store/balancedaudio/

As much as I "wanna believe" in the mostly earnest 'research' that some firms honestly seem to do I have to admit that even if I won MegaUltraSuperPowerBall I would have a real hard time parting with 100x that for interconnects hand made out of custom drawn wire woven in such a way as the fancy stuff from some firms -- http://shunyata.com/Images/Reviews/RobertHarley_012012.pdf