Here is a challenge to any doubters here.

Try convincing me M would release new products - 808.2 and 7200s and my recent purchases - without an improvement in the sound that is so obvious to the end user and based upon their new technology that won a new technology award for the 808.2 at CES 2008.

The bass on the 8000 must have some advantage although there is an improved bass in the 7200s compared to the 7000.