These are all 110 ohm digital cables, though I haven't worked with any of them (just the thicker DA202 Canare version).
Canare DA202-AT
Belden 1800B (or the dual/siamese version 1802B for mic cable pairs)
Gepco DS401 (or the dual/siamese version DS401D for mic cable pairs)
I'd recently been reading that digital audio (110 ohm) cable is actually better for analog signals due to their low capacitance. So I had been toying with the idea of 110 ohm cable for analog, but I hadn't thought about using 110 ohm cable for 75 ohm spdif digital audio. Does the 110 ohm digi cable work fine for 75 ohm digi signals, assuming very short runs of only a couple feet?
I've used the Gepco. This is really nice cable. It is probably more suitable for light use (or permanent installation), though, since it has a foil shield. I imagine this will break if you flex it a lot. It is less flexible than a braid too. If you're looking for twinned cable for heavy use, see Canare 3106. This stuff is thicker, but it is more flexible/durable.
I love the twinned cable. Once you use this, you won't go back to pairs of cables. This stuff is great for what we do. It also makes great interconnects, balanced and unbalanced.
Oh yeah, if you want the Gepco, contact Fritz at H.A.V.E. audio. I think it is 33cents/foot or something. Canare 3106 is approx 1$/foot at Markertek.
Richard