Make my 6 gen v6 Camaro louder
 

I have a GM NPP performance exhaust on my v6 Camaro right now. I want to make my car louder. I am thinking about put a Borla ATAK axle-back exhaust, will it be a lot more louder than the GM performance exhaust? Does the Borla Axle-Back exhaust worth it? Or can I just add a straight pipe?