Just bought a second hand Island so once I Have that and my RE600's in, I'll let you know how it fares.
Congrats! Do let us know what you think about it. I'm really curious to hear what you think about the balanced out once you get there.
I just received my new cans today and did some more a/b comparisons with the Meridian Explorer. To my ears, it's no contest. The Island is the better sounding device.