[s-cars] 92 S4 vs '01 S4 vs '01 A6 2.7T

[Andreas]

Guys,
 
Looking for some opinions.
I'm slowly considering moving on from my 92 S4 310k km (ABT Sport
springs/ Koni shocks/ K24 Turbo) to something newer.
The '04 S4 is out of control expensive so I'm trying to find a suitable
alternative.
The obvious choices are either a '01 S4 or a '01 A6 2.7T with sport
package/6 speed.
I have a family of 4 and there were never Avants available in Canada.
:-(.
How are the rides between the two?
Is the S4 suspension more stiff/tight then the A6 sport suspension?
Does the weight difference make a big difference?
 
Thanks
Andreas Schneider