At least I have one in my 3in SZ system, and I'm very happy. I'm not totally positive what the drone is that everyone talks about though... My exhaust is loud but otherwise very comfortable even for long distance drives. I guess I have a semi-unique setup as I am running 2.5in DPs/TPs, but 3in Resonated Xpipe and 3in muffler section. I'm really curious if I either don't have the drone or I totally have it and just don't mind it all. I wonder if the smaller to larger piping has some sort of effect on this.