The sound is awesome. My engine settings tend to be:
Default: Sport
Other folk in the car/making conversation: Normal
Long motorway cruise: Eco (I know I know)
P3asa, I think you asked me about motorway sound the other day and I forgot to reply sorry... I checked it again since, and I can definitely hear the exhaust hum on the motorway when in Sport, especially under any kind of acceleration - so I do tend to turn it off then, is that not the same for you?