I wear earplugs whenever I ride no matter what because I have because I have to worry about hearing tests. I had the 18" quiet core but I wanted the shorter muffler and more volume, so now I've swapped with another owner for the 12" version. I'll give more input on how I feel about the swap when my bike comes back together, but right now I'm doing damn near all of the DIY's at the same time so the bike looks like this.
-Nate
Bike Apart.jpg