Gepco DLC224 is some nice cable. Remember, besides it being true
DMX, cables have to last! Even
Cat5 shielded would work if you didn't have to move it, but in the real world, cable gets flexed a lot! Much of what makes for a better
DMX cable has to do with the construction and how much abuse it can take. First, decide if you are going with one or two pair cable. Although
DMX standard is for 5 pin connectors, only the one pair gets used. There is some equipment that uses the other pair for special purposes, but these are generally outside of the usual
DMX environment. Now look at how the
shield is constructed- Is it just a piece of foil with a drain
wire, or is the foil covered with a full
braid? The foil will eventually break down, so it's nice to have that full
braid covering it.
Now, it's time for my rant! - If you go with two pair cable, it may be hard to find the real thing! Even the better quality cable seams to be built by twisting 4 conductors together on the same axis. Will it work? Yes. Is it really two pairs? NO! The Belden 8102 is true two-pair cable, but as you said, it's gray!