What model? What features?
I used one on a truck I owned....it allowed my to change the speedometer, as I had a larger rim/tire package, and the tuner came with a tow tune, and a 93 octane tune. It also read and allowed codes to be reset.
Most folks like the tuners that allow for custom tunes (i.e. company will create specialty tunes for you based on your mods). Not sure if Superchips does this.
It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.