I've had my SH840's for a few weeks now. Got them from RMC Audio for $129 shipped. GREAT DEAL, but I had to order in July and wait until last month for delivery.

Lots of detail and solid bass. My Grado HF2's have a bit more clarity but that's an unfair comparison. BUT the 804's come w/ an extra cable, 1/4" adapter, and a bag. Great deal and easy to drive.