Just got my C15 w/ Eidolic PEERLESS XLR and initial impressions are that it is indeed more musical than the stock cable for my LCD5. I hear a slightly darker treble (perhaps the s-mod would have helped here), but with a more fuller midrange and heftier lower-end. The fuller notes create a more coherent portrayal across the frequencies which really helps to just get sucked into the musical versus the more analytical stock cable.
I'll take some cooler photos later but happy with the purchase so far. Looking forward to improving my chain further with some TWL ICs and PCs within the next week or so.