I have done a whole lot of R&D and testing for creating my own ASE/EBU XLR digital cable. One thing to note here is that a cable composition that works great for analog audio does NOT translate over to good performance of digital. The XLR connector plays a MAJOR role in the end result. I went through a bunch of different connectors (Neutrik, Furutech, Neotech, rhodium plated, gold plated). The absolute best connector I found that was highest resolution and most neutral for digital XLR is the Oyaide Focus. I'm not sure what the Sablon custom XLR connector is made from and I, obviously, have not tested with it.
If I were to "buy" a retail cable, I would probably be looking at the Black Cat solutions. The Sablon may be excellent as well. Generally, solid silver works better in digital cables and a larger awg is also better. Obviously, solid-core conductors are superior over stranded conductors.