If you can afford it, go with the MagnaFlow CatBack Performance Exhaust System (#16869) and the Y-Pipe (#10778). They will make your truck sound loud when you want it to but not when you don't. I have very very little, if any, drone. And I am extremely impressed with the improvement in power and mpg. I think I am getting about 2 to 2.5mpg better. And I am WOT a lot more than usual for some reason. I had the system installed last Friday. The exhaust tips that come with the system are incredible, much bigger and better looking than stock. And it comes with a lifetime warranty. Find the best price online and then call AutoAnything. They will beat it by a dollar or two.
Here is my new system installed. Click on it for the video. However, the video sound quality does not do it justice. Unbelievable sound in person.