After owning Shure E500, Yuin PK1/PK2, Triple.fi, Edition 9 and MS-Pro, I have to say my best portable rig I've ever owned is:
[Any dap] > transmitter ~ Sennheiser MXW1 w/ donut pads
edit: sorry I can't upload the pictures now
Are UE-[any custom] generic's for sale to all? If they are, I've always wondered why I haven't seen them at all.