The A6 is a bit of a barge compared to the E39. The E39 will make you feel more involved.

As with most audis, the prob is you have way too much weight too far forward, and it is not designed with speed and handling in mind (except the legendary RS6).

The Audis dont have the nasty BMW esque image, but I decided that the Image was well worth it due to the increased quality of product.

BMWs tend to have more toys, but the Audis are cleaner lined

Hopre this helps, but remember I am biassed!!

JJ