this is the cable i have right now,
http://www.head-fi.org/t/699277/dhc-macromolecule-8-wire-occ-cable-w-viablue-y-split-for-audeze-lcd2-3-x-xc
i liked it so much, i decided to get a balanced one and the adapter to use with the alpha dog, i haven't gotten it yet
as for the SQ regarding both, both great but different. the soundstage is much bigger with the x as expected, deeper bass, but the alpha's bass is faster it seems, the lcd x is slightly warm, where i find the alpha clear, neutral, highly detailed
i really use both equally i think, the alpha may be more "fun" snappy, PRAT, where the X has a grand warm, scale to it