Hi Gnus,
I have the HD650 + RnB GRace 52 cable that I have NEVER used because I never owned an amp
I have my order on the supermini but I guess I will go with an IEM (either UM2/UM56 or the new Shure E500).
From my reading on this forum, I have a feeling that the RnB Cable is more favoured than the Zu cable.
Anyhow, I am also selling a new ipod 30gb photo replacement that you could send to Vinnie for the mod. I could send it directly for you to Vinnie and have you address instead

(Check my thread if you are interested).
Note: ipod photo 30gb is thinner than the 60gb that is why I bought it in first place unless you are going to use the full 60gb, then you can justify the added weight.
I haven't offered my HD650 + RnB Grace 52 cable for sale yet but in case you are interested with a good offer, let me know, preferably by email.
Cheers!