I had the AZ MC2 and it's a pretty good digital cable. My transport, a Bel Canto CDT 3, uses a bnc connection so I shopped around for a cable with bnc on one end and rca on the other and found, built by Take 5 Audio of Canada, a Neotech NEVD 2001 with an Xhadow rca and an Oyaide bnc connector used for under $200. Given the quality of the plugs alone, you'd expect the Neotech cable to sound better and it does, to me. I hear a bit more subtle inner detail with the Neotech cable but the main difference is a more organic quality to the sound. The AZ cable sounds a bit mechanical in comparison. On some material, there can be a slight upper-midrange brightness on my speakers which I do hear with the AZ cable and is absent with the Neotech. You might check Take 5 Audio's site for more info and the US to Canadian$$$ transfer rate greatly benefits us in the states. Also, these cables come up on the used market fairly often so check hifishark.com. But soix is right about re-selling the AZ cables. If you try them and don't find them to your liking or worth the money they will be easy to move.
Digital coax cables
I stream Qobuz from a standalone streamer to a DAC. I use a digital coax cable [Audioquest cinnamon, about $90. Will one of the more expensive cables make much difference? Some claim no difference, it is before the DAC so it makes no difference. Others claim everything makes a difference. So......