I've been thinking about the S6 since having a go at it on the track. Its not a speed demon for track use, but it definately works if someone needs a comfy car with a sporty attitude, especially on long journeys. Of course the Bentley CGT does it better, but there's no alternative if you go for the Avant. Until the RS6 - even if it only has 520HP.

PS. OMG - I never thought I'd say that a car has only 520HP.