S4's are a beautiful, fun car.
I owned two of them in the past two years.
it's a heavy car though.
I'd say this, with all my Audi past...
Audi is a good, quick, fun, cruiser or sorts.
You want a 'drivers' car ? buy the BMW.
I need 4 doors and that's why I didn't buy an e46 M3.
But, I ended up with a BMW anyway.....
Just awaiting the sedan M3 myself.