Lot of things about the new V8 are tempting, but in reality, I don't see a lot of difference between the current (proven) V10 and the 7.3 V8.Mileage is about he same, considering you are driving a box down the road, so I cant really see aerodynamics playing any part. The 10 speed transmission is a good idea, but what is the reality you will ever gett into 10th gear? I can foresee an awful lot of up / down shifting going on with the transmission, especially on any grade. I went with the V10, and am quite happy with the performance and I know what I have - not an unproven engine being tested for the first year or two by the consumer. JMO. Now, if it had been the 7.3 diesel .......