I have a magnaflow...and after hearing the other exhausts I wouldn't have gone with anything else...TSRM has a louder and flatter sound...its not high pitched...greddy has a low pitched hum...and magnaflow has a low pitched rumble to it...that gets louder as it goes up...but not as loud as tsrm...and as it gets louder it keeps its rumble...no high pitched noise...and no flattening of the deepness