2011 Denali2500HD 6.0 Vortec - wanting a quality (easy) tune

I'm new here so bare with me. I just bought a new 2011 GMC Denali 2500HD with the 6.0 Vortec. I am looking for more power from the engine and quiker/crisper shifts from the tranny. I don't use this truck for work and basically just want to improve the performance. I feel that the engines true potential is being held back and I want to find something to wake it up. From what I've read, it seems that the Efi Live is complicated. I'm looking for something to basically plug in and go. Am I at the right place or should I look towards a Superchips or Hypertech, etc., etc..?
Any info on this would be appreciated.

Contact Justin @.... http://www.blackbearperformance.com/ ask him about AutoCal...:D