the drone is minimal and easily avoidable. I met someone yesterday who wanted to drive a S5 before he bought one since the dealers dont stock any, and he said " i cant believe the exhaust has no drone". I was surprised to hear him say that, but its just not that noticeable. Now if your going up a hill in low RPms, between 1800-2200 then yes ther is a drone, so unless your in a very hilly area(san francisco) i'd say go with magnaflow, you will not regret it.I'd love to hear about the drone because I have a Magnaflow system in my Shelby Mustang and the drone at 2000rpm will drill through your head if you linger there. Wouldn't want that with the more elegant S5.