I currently have stingers and prochamber, I have had several set ups and this is by far my favorite. I have had, catted x, o/r X pipe, and the prochamber with stingers is by far the cleanest and best sound for these cars. It can definitely be loud when your on it but when cruising there is zero drone.
How does it compare now to the catted X? Youtube vids make them sound similar with the catted X almost sounding slightly deeper but it's always tough to tell based off of video.