 I have owned three BMW's, an Acura, a 
Mercedes-Benz, and most recently an Infiniti 
G35 Coupe.  I never even considered 
buying an Audi until I almost died in 
my RWD Infiniti last winter in the 
snow. So, trying to be conservative, I 
bought the S4. All I can say is HOLY 
COW!!!  The thing is a rocket ship in 
sheep's clothing.  In sport mode, there 
are few people who can take you at a 
stop sign.  It handles far better than 
any of my RWD cars and it feels very 
safe.  Haven't had much snow this year 
yet, but with the winter wheels on, I 
don't anticipate any problems.  Can't 
see why I'd ever buy anything else.