I currently have the berk race and love it. Though this car is not the daily, my daily has a lot more drone. To me, it is just background noise.
If there is another meet and I can make it, you can do a sound check. BMW CCA is doing some undercarriage session in the south shore on Saturday, July 30, 2016. I will be attending since its a friend's shop.
http://www.boston-bmwcca.org/events/...px?EventID=893
I heard the videos and no video does the justice as hearing it in person.