I am in the market for a tuner for my truck. I have read here that the most popular one for our trucks is mad my SCT. I have gone to there web site and was overwhelmed, by more than one products for the 6.0L. Now can anyone describe me the benefits and draw backs on any of these different products. [color:#CC0000]Livewire, SF3, X3, xcalibrator2 or the touch screen extreme.[/color]Anyone with some knowledge in re guards to the differences would help a lot.