My next door neighbor had a new 2012 F350 Lariat CC LB 4x4 that he really liked but he hated the payments. He decided to sell it and ended up with a '09 F350 Lariat SB with less than 50k miles. I asked him how he liked it, and his answer was that he likes the interior better as it has more toys than the '12, but that the fuel economy is terrible compared to the 6.7. He says it is getting not much better MPGs than the '03 5.4 F350 CC he had before the '12. He does around a 1000 miles a week, so he may be more sensitive to fuel economy than many. I notice how much louder the 6.4 is than the 6.7 was when he pulls up and especially when idling.