Hello everyone, I am in the market for a new pickup and have settled on the Dodge Ram with the Cummins. I have been looking at 06 and newer models (mega cab an quad cab), both 2500 and 3500. My question revolves around the differences between the pre 2007.5 models with the 5.9 and the newer models with the 6.7. My understanding is that mileage went to %^%^& with the 6.7 and the DPF filter, so I had been looking at the 5.9 models. So in a roundabout way, I have the following questions- Is the 6.7 actually ok? Is the 6-spd auto that comes with the 6.7 better than the 4-spd auto of the 5.9? What is the average fuel economy of each engine? Any reliability issues with either (and/or their respective auto trans)? Any othr issues with this era of Ram? Would I be ok buying one with 50k miles to keep cost down, or should I spend more to get one with around 20 k or less? Anything else of note? Thanks in advance for your help!