100% agreed, i would pick a 335d M sport coupe over an A5 3.0TDI everytime.I have an S5 but would not have an A5. I would go for a different car if I had to. The S5 is a very different car to the A5.
If you went from A5 to S5 you would be very happy (providing fuel cost is not an issue). If you went from S5 to A5 you would not feel happy (unless fuel cost was the reason).
The porsche is twice the cost of the S5. If I was going to spend that money I wouldnt have bought an S5 either.Never once considered S5 - for me if I was considering it I would not have bought an Audi - I would have gone for a Porsche 997 C4S -if I'm gonna spend a fortune on fuel might as well get a car to match - so for economy/comfort/understated looks a loaded 3.0 Tdi for me was the only choice in the whole Audi Range.