This^ I had quad tip stingers and went from stock, to LT's to cam.

My impression of them was that they sounded great. But IMO weren't as loud as people think. As far as the drone goes, they actually did drone a massive amount. Even when I was stock with the the stingers, it was a terrible drone inside of the cabin at certain RPMS. I then added the Cam..and to my surprise, it wasn't as loud as I expected (230/236 .600 .600 112) the lope seemed muffled IMO. In the end I wanted something louder lol but I will admit I got "used" to the drone as it was my daily driver. Although I was used to it, I would still tell new passengers to excuse the ridiculous drone and resonance inside the car lol I was still aware of it. Again that's just my take on it.
The drone is real and they weren't as loud as people would report here.

Side note: my stingers were the original version not the revised version now called the "S-type"


But I am a Borla Fan despite my experience.
I now have a borla ATAK that is worlds better, it sounds incredible and is louder than the stingers I had and had ZERO drone or resonance inside the cabin. I couldn't be happier. I added a Sound Killer partition, my car sounds stock from the inside with a slight deeper rumble, but are just crazy loud from the outside.

I'll take a borla over anyone's Corsa any day.