I love my Sennheiser 800's. They have been further improved with the addition of the Double Helix Silver-R Clone cables. They were then taken to another new world of great sound by the following: The cables were sent to Synergistic Research and "Quantum Tunneled" this gave a marked improvement in openess and greater detail- a worth while $100.00 investment. The latest improvement was the application of WA- Qunatum Chips-Transformer Model ( go to Audio Assylum.com- Tweeks forum for discussion) to the outer shell of each headphone driver. An improved black background and better soundstage depth.
The "chips" are available from The Cable Company.
The Sennheiser 800's never sounded better.