Anyone with the V3's thinking of getting a 3rd party cable, definitely do it. Night & day compared to using the stock cable, which I kinda expected to an extent, but probably didn't expect the difference (better imaging/definition/clarity) to be as noticeable as it is.
Between the stock cable and 2 aftermarket cables I've got, the differences I've noticed are almost entirely in the ergonomics and comfort of the cables themselves.
My Beat Audio Sapphire Pro has been my favourite, but my Headphone lounge cable seems a little more sturdy. I noticed a sonic difference more recently when switching back and forth between them, but I don't think it was related to the conductivity of the copper and silver so much as it was the memory wire causing mild displacement of my IEM's.
With shaped overmolding I've noticed my CIEM's taking less (albeit mild) resistance to find a comfortable place to sit in my ear, and not move. With the memory wire (which I detest now) I've noticed it keeps the nozzle from reaching its intended depth without me working to find the perfect spot for it to sit.
It may be possible that this is something you're experiencing as well.
Also, how are you liking your V3's?
Edited by Fizz - 7/11/13 at 10:25pm