Go with the Touring, its pretty loud, but if you need to, the resonator really tones it downGreat tip! Now that you've had it on for 24 hours, are you still all-in on the S-type? Any drone in MDS or other drawbacks? I've been leaning towards this system for a year, but I've yet to pull the trigger. My last truck was quite loud, and I guess I've been giving myself a little break