My father has a Super Crew 4x4 Ecoboost with 3.73 gears. All I can say is wow. I have had 6 F-150's with the 5.4L, a 3/4 ton Dodge Hemi, and 4 diesels, 3 Ford and one GM. I currently have a 06 F-350 Diesel and a 08 Nissan Titan. While its no diesel its the closest thing I have seen.
Its the best thing I have driven since the Titan. I have only driven it once but been in it a few other times. The time I drove it my trip was 13 miles. It got about 18 mpg with stop and go and about 7 miles of 60 mph cruise set. During the 60 mpg portion it was doing 26 mpg. His average from since he bought it in May is right at 17.5 mpg and this truck has not been more than 60 miles from home.
I would have one today if I did not have my other two perfectly fine and capable trucks paid off. I did help him in ordering his with the options I wanted so maybe in a few years I can buy it off him when he is looking to trade.
By the way, I love the Twin Turbo V6. We also have a BMW 335I with the inline 6 cylinder 3.0L Twin Turbo. Look at the number for that car. Zero to 60 in 4 seconds, 1/4 mile in 12 seconds, and its averaging 25 mpg around town. Its a sleeper but a beast at the same time.
Chris