There seem to be three types of Walker mufflers. I bought the mid-range hoping it would be noticeably quieter, but that doesn't seem to be the case. It's not loud by any means, but it's not quiet either. It seems to be of better quality than the cheap ones. I would be happy if it lasts longer than the cheap one. I tend to drive long distances so the cheaper one lasted 4 years so I hope it tops that. The set is great!