Marigo Labs Apparition 5.6 & 5.7

I am using the 5.7 on my Theta Gen.VIII/Compli set-up with great results.
I am also a dealer for Marigo Labs.
I have not done a comparison of the older models.
Might chat with Ron at Marigo.

I have heard/used a number of digital cables. The 5.7 is a very fine cable. IMO: You would have to spend considerably more $$ to beat it. It is a stiff cable and may take some bending and patience to fit. Minimum length 1.5m. Sorry, I have not heard the 5.6.

I've heard 5.7 (1.5m) and Reference 2 (1m) in my system. Older and thicker Reference 2 sounded more open especially in the upper midrange. 5.7 had deeper bass and was overall more relaxing. I prefer the sound of 5.7 on old (bright) recordings and Referece 2 with the rest. Both cables had the sparkle on upper end. I didn't hear a major difference in dynamics or focus between the two, though I felt that Reference 2 had slightly deeper sounstage. I wonder how Reference 2 would sound if it was 1.5m long.