I want to upgrade to a diesel for towing our travel trailer. Need real world fuel economy numbers?

Can anyone tell me what they get for fuel economy on thier 06-07 3/4 ton diesel (any make) and what motor do you have and is that with or without a programmer. Would love to know your solo mileage and your towing mileage and how much you tow. THANKS

a Dodge Ram would be best. It's got a lot more torque. They should get around 15mpg depending on what your towing. They are expensive though