Have a pair of Audio-Technica ATH-W5000 headphones on the way to try out.
james:
Hi James,
The sacrifices you have to make in the cause of development for new products

I'm very envious, when you've finished playing, sorry, I mean researching

I'd be very interested in your opinions regarding all the different headphones you have tried with the BHA-1, personally I'm thinking of going with 2 system, a Stax sytem and a BHA-1 system with a pair of Dynamics/Planar Magnetics, just not sure which ones at the moment though as auditioning all the phones I'm interested in is almost impossible.