They are all the same, AEM/Injen. The sound of an intake is like a loud growl when you punch it. One downside to a CAI is when it is time to clean the filter because it is located down below the bumper and it is very hard to reach. Plus, since the filter is exposed, you could potentially suck up water during heavy rainy season and damage the engine.

If you can wait, I would wait for Comptech to make the Icebox. You get the same power gain without the much added noise and the filter sit securely in the engine bay and is easily accessible.