My money would be on the new 2015 aluminum bodied Ford with 2.7 EcoBoost V6.
It's over a 1000 pounds lighter than the Ram, think about that, the RAM is carrying an extra thousand pounds around!! won't rust, it has a cheaper MSRP, better build quality, only gets 1mpg worse than the diesel ram in the city, does 0-60 2.8 seconds faster than the Ram, has a higher payload capacity.
the choice is clear, it's no wonder Ford is killing it in the market....
either that, or you could always go oil undercoat your Ram every year.... :lol:
If you are towing, the Ram Ecodiesel will use considerably less fuel than the Ford Ecoboost. Even in normal driving, the Ecodiesel appears to do a little better than EPA, the Ecoboost substantially worse.
Ecodiesel with a pretty decent sample size: http://www.fuelly.com/car/ram/1500?engineconfig_id=8453&bodystyleconfig_id=&submodel_id=
It's a bit early to get a good statistical sample on the 2015, but the one currently in the database doesn't match the Ram: http://www.fuelly.com/car/ram/1500?engineconfig_id=8453&bodystyleconfig_id=&submodel_id=
The outgoing model with the 3.5 Ecoboost has a much better sample size, and it's not pretty ... http://www.fuelly.com/car/ford/f-150?engineconfig_id=2815&bodystyleconfig_id=&submodel_id=
And ... here's the supporting data for the Ecoboost being not appreciably better in the real world than the plain old 5.0 V8 non turbo: http://www.fuelly.com/car/ford/f-150?engineconfig_id=2815&bodystyleconfig_id=&submodel_id=