Hi Lee,
Hopefully I can post this without getting my head chewed off lol. Both Transparent and MIT are filter cables. They are not neutral at all. So it really depends on the sonic signatures of the electronics and the speakers as well as the other cables you are using. If your electronics or speakers are bright, these type of cables may work very well. Just depends what you are trying to achieve. I can't run those on our speakers at all. Sucks all the life out of them. But on some systems they may be the bomb.
Leif, I don't think anyone is going to chew off your head here at WBF. I am curious about which Transparent cables you used and whether or not it was an entire loom and if it was calibrated to your specific equipment. Regarding the MIT cables, which settings did you use? I have heard effects "sounding like" phase issues with MIT depending on how many poles of articulation were being used. I have always preferred the lowest number of poles.
Dealers in Europe and Asia demonstrate Magico speakers with Transparent cables and when I visited the Magico factory, they had both Transparent and MIT cables in their main demo/listening room hooked up to the equipment. I don't have the impression that Magico uses gear when testing their speakers that is "not neutral at all" unless they are just trying to see if their speakers are transparent enough to demonstrate gear changes.