I've had the stingers for a little over a month. I was concerned they might be too loud at first (I'm not 25 any more

and they are louder then stock, but after having them I would say they are a nice balance of letting people know you have a cool car, but not too obnoxious. My wife did notice after about 3 days that I put "Man Pipes" on.
Be warned that they do have a drone below about 2200 rpms, so if that's a issue, you might want to look for something else. Before I got them I wasn't quite sure what people were referring to when talking about "Drone" - I found out quickly. If you are wondering, cover your ears with your hands and hum.
Good Luck!