I have a pico and an opus. If I can't case up the buffalo in time for canjam, I'll throw the opus into a simple wood case and bring it instead. I think someone else should have a y1, then we can have a little comparison albeit under meet conditions. Of course, that still leaves out the source and amp...but I think there will be plenty of those around.
edit: Doh, I only have the WM8740 version of the opus.