I got some Canare's from marc, good stuff. Everyone around here has nothing but good things to say about Ed from Kindcables too. Marc is my man though, after doing the phantom mod to my at831's he agrees to fix them free of charge after I hear some static in one of the solder points that wasn't even part of the mod. quality service.
IMHO mics are the most sound-impacting device in the chain, then preamp, and adc and cables can go back and forth depending on gear/situation. I do know one thing though, and that is that marc's miagi silvers are in my future...