Congrats on the choice of the diesel. I am a V-10 guy. Was not a hard choice for me. When i was truck shopping, I knew I wanted nothing to do with the 6.0. The 6.8 V-10 is at the top of the charts as far as reliable, long lasting engines go. Buses, motor homes, ambulances, and pick up trucks all have strong support for the 6.8. They just run well for a long time. 500,000 to 750,000 miles is not uncommon on the bus engines. The fuel mileage is not as bad as the stereotype lets on, but it is a costly event to fill up. Just sent our 2006 ambulance to the shop, with another 6.0 diesel leak today. So far, the bill is approaching $800. So much money has been thrown at that thing, 2 motors, and endless issues. Our next ambulance is being ordered with the 6.8.