This car puts a grin on my face every time I drive! Granted the front shield can be polarizing but overall the car is incredibly fun to drive. I had a '08 A4 prior to the RDX and the RDX handles corners better than the A4. And with way more power. Noise level between the two is about the same but the turbo growl on the RDX is really pleasant. I find the ride to be very comfortable, steering with good road feel and the interior clean and functional.
We have a '11 Q5 2.0 and the RDX is much more fun to drive. The Q5 is bigger, quieter and feels more numb on the roads. It doesn't handle as well as the RDX, costs $8000 more comparably equip and Acura dealers are >>>>> than Audi.