  Had considered an M3. After I drove the S5 Cab there was no turning back. The interior blows you away compared to the BMW. My dealer suggested an ECU upgrade pushing the car to 410 HP with 370 lb-ft of tqe. The car is as you can imagine super fast. Zero to 60 4.3 seconds. Right there with the M. Big difference is the quatro. Makes the car stick to the road like glue.