If you are looking to step up from the F-250 then the Ford F-350 Super Duty Pickup Truck would be the truck for you. The towing capacity is drastically higher from 18,500lbs to the new max with the F-350 being at 32,000lbs. Make sure to check your state laws though because some states require a commercial vehicle license to tow that much weight. With a truck like this, you want to make sure it stays in tip-top shape with some mud flaps. Also getting a truck bed extender wouldn't hurt if you were bringing wood and other larger objects across the work sight.