If anyone else is following this thread, I've had two suggestions thus far:
1. Oehlbach
2. Twisted Pair Game Junkie

Oehlbach is a German company and while I have seen their cables stateside, I'm not sure whether the mini to RCA they make can be found here. I've emailed them.

Game Junkie seems to retail for $69 and have a twisted pair design but I've been unable to locate anything more specific. I've also emailed them since I didn't know of a dealer.

I'm still looking for alternatives and information about the above two cables.

This is really the most polite I can be about this--I'm only interested in discussing the cables. I'm not looking for advice on alternatives to the cable I'm looking for.

Thanks
Kelly