I had a Remus muffler with both resonators installed. Didn't really make a big difference. Deleted the rear resonator and it growled a little bit. I then deleted the front one and it really sounds great. I've had two different Remus mufflers with both resonators deleted and they both sounded phenomenal. I have no experience with stock muffler though
My babies; Supercharged 328ci, 2009 Alpine White 135i.
625awhp 99 GSX(SOLD), Straight Piped 2011 Grand Cherokee (SOLD)