I wish Borla would post a real life video of the S and the ATAK side by side. I'm really thinking the S is better for my needs but without a comparison it's only speculation.
BTW, yours sounds great
On camera you wouldn't hear the difference between the sound. It needs to be heard in person. They sound to similar on a recording. The S is a little deeper sounding then the ATAK. ATAK is louder at WOT.