Don't want to start some kind of high end technical argument, but I think most medium quality cables can transmit ones and zeroes just as well as the overpriced cables.
I've bought the Zaolla's from Cascade Media which are about half the price of Magix, and probably still way more conductive/durable than they need to be. The connectors and workmanship are every bit as good. Cascade's Hosa and Apogee stuff is even cheaper, probably kicks ass. Ratshack's cables look pretty beefy and probably will do in a jiffy. I do have one Magix cable and it is beautifully flexible and probably has never dropped a single one or zero. But I miss the hundred bucks I spent on it.
Remember this isn't analog audio, so if it works it works- you will not hear any difference in quality except psychologically induced (which cannot be discounted- if spending money makes things sound better, by all means do so!)
Remember also that you are connecting a (relatively) huge cable to a tiny little piece of wire on a printed circuit. The signal has to travel through both.