Good thing you brought this up I starting to wonder who was best to contact
All I can say is that I hope I'm not asking to much with the list:
Something from Ultrasone i.e. Edition 8/10? as I've never heard a pair of Ultrasone's before.
Violectric HPA V200 HeadAmp,
Something hi-end from Grado as I've also never heard anything from them before.
And the DAC Magic Plus for Cambridge Audio.
I have a much lengthier list but I think that can wait till I can make it to your store and save the hassle of transportation of the gear.
Thanks, I hope that's not too much to add the your ever growing list.