OK, In about 4 months, I'm buying a truck. I'm either buying the F-150 SC with the 5.4V8 or a F-250 SD Crew cab with the same engine or V-10, depending on gas mileage. I plan on pulling a 16ft trailer loaded with either a Ford 8n tractor, a 53 3/4 chevy, or a 57 1/2 ton chevy. I will only tow maybe once a month or so, if that much. Main driving will be around the surrounding Houston, TX area, maybe 80 miles per day about 4 days a week. What's best to purchase in your opinion. The only reason I would want the F-150 is if the gas mileage difference is considerable. Thanks.