Sorry to start another typical "what type of exhaust" thread. I searched through posts and read up some and listened to many clips on youtube, but I am still not really sure of what direction to go. I have a 2010 5.3L Sierra with the flex-fuel option. I am looking for a simple cat-back exhaust that is in the middle or lower range in loudness around 400 dollars. Just a little louder than stock but with a nice rumble. I was thinking either magnaflow or Borla. Any suggestions? Hopefully my following posts will be less painful to answer.