A shop that works with an Audi/Porsche/BMW dealership on the west coast...told me get the 2.0 if you get an Audi, they can be modded fairly inexpensive to have about 370lbs of torque all under warrantly with the Stasis mod.
Torque is where it is at.
A5 looks are the best IMO.
I have a 335 e90 because of car seats, but otherwise I would look at an A5.
I do not like the looks of the Audi sedans IMO.