Best headphones under 800.00 USD

I own the Sennheiser 600s and also the 580s, and have listened to many others. On balance, I agree with Sdcampbell's comments about the 600's. The 600s are smooth and relaxing yet detailed-- also comfortable for long term listening. Cheers, and Good Hunting. Craig

There is a website called headwize.com that has a lot of headphone reviews and information. Use their search engine to save time.
My personal favorite is the Grado RS-2. I have tried the Sennheisers and like them but have found they need a tube headphone amp (like the Earmax) to sound their best. I have been able to get around the comfort issue with the Grado's by using the "comfy" foam pads and moving my eyeglasses off of my ears.

If you get foam pads that allow long term listening I would also vote for Grado

I have the HD-600's with the Musical Fidelity XCANSv2 and power supply. I am extremely happy. You cannot go wrong with the RS-1's or 2's either, especially with their little battery powered headphone amp. You will just be out twice the money but we are still talking under a $1000.00. If you listen to both it will be easy to choose. The HD-600's are a little hot on summer days in Calif. Also, I purchased a very good headphone extension cable ( Daybreak ) from Sonic Horizon
( at HCM Audio ) so I don't have the HD-600's tiny little cable swaying in the wind. It is a major source of noise in your headphones when it rubs up against anything.