Since its a work truck, see if they'll cover the cost of the Ecoboost. Its an extremely rugged engine, and the fuel savings make it worth while for the added $5k. It takes quite a few km's to pay that off, but in the end its worth it. I have a friend with the Ecoboost in his F150, and he just adores it. The 5.0 is no slouch either though; dont get me wrong.
"The music business is a cruel and shallow money trench, a long plastic hallway where thieves and pimps run free, and good men die like dogs. There's also a negative side"