I originally wanted to buy Borla or Magnaflow for my 2012 Chevy Silverado 1500 4x4 truck. Now I'm so glad I decided to purchase the Dynomax 17233 Ultraflo Weld Muffler. My truck sounds really good and has a nice deep tone that isn't too loud or annoying. I was also concerned about any drones, but they are very minimal and barely audible. In terms of performance, I think it feels a little more peppy than with the stock muffler.