I had a dyna max race magnum on my last colorado,it was cheap (200) at a local custom muffler chop.5 minutes away and its not as droony sounding as a Gibson.My buddy didn't like how his gibson sounded for the price he paid for it.He was just a lil louder than mine (10 db).There's lots of fine exhaust out there,that's my story.On the new truck I have a flowmaster 40 seris,80 for the muffler and 80 for the install.I'm thinking I'll really make it breath in the future.Cheers!