i have a 2006 QC Big Horn 4.7L and i was looking into getting a programmer. this is for power when i want to have fun but most importantly raiseing my MPG. im sitting at about 11 MPG( all my driving is around town). ive looked at the SC and all other brands. since i have the 4.7 i dont know if it is worth it to get a 600$ one with the touch screen. in your opinion what is the best one out there.