Yeah I have to agree its a shame some of the controls that are being put on these new engines. They don't seem to be as reliable as the old ones and in the long run, like Wallace said, they use about twice as much fuel.
When I bought my Dodge I was ready to buy one of the new 6.7's. But, after talking to some early adopters and hearing their issues I opted to go with one of the very last 5.9s put into a new truck. It was manufactured the last month that they put them in trucks.
Maybe it will get better after some companies get the kinks worked out. However, from this standpoint we are turning out cleaner emissions per gallon burnt, but we are burning more gallons.....