Thanks for the tips.

Seems HIFI Man also sells planar headphones - probably not as good but less expensive. http://www.amazon.com/dp/B007ZG32I4/...I3W0Y0EHUJOB9L

Now that holidays are over it doesn't matter as much - but maybe headphones at work would be worth it - since I don't think I will be buying a pair of Sierras for the office.

Sorry to derail the discussion away from the beloved speakers!