I have an overnighter and need to buy a truck to haul it as I have to borrow my father's now. I am looking at the Tundra 4 door 4x4 (small family). We currently haul it with a 2500 Silverado (6.0L) but the fuel mileage is outragous, power is no problem. Do you think the Tundra would get better mileage? What other trucks would you suggest. This truck will also be my daily driver ~40 miles a day.