I have Borla ATAK and Kooks. I love the combo! Some people might think that it's obnoxiously loud but I don't. I guess that is a matter of opinion.
When you get on the throttle hard, it does get quite loud. However if you are taking it easy it stays relatively calm and quiet (especially if you don't have headers).
There is a slight bit of drone if you are in 6th gear between 70 and 80 mph, but it's not horrible at all. Outside of that there is no drone at all.
The following link is a dyno pull with this setup that I have for reference (sorry, I have no other videos of it).
You can tell it's kind of quiet until it gets pushed, then it wakes up big time. I love it! Perfect combo in my opinion.
