Thank you, How did they tow compared to other companies you have towed of comparable size, any noticable increase in fuel mileage? This unit says it weighs 7,700 lbs unloaded and a gvw of 12,000. I know some companies list the base weight without the slides so I'am thinking the actual weight is some where around 10,000 lbs before adding water and camping goods. I cann't beleave it would weigh 7,700 lbs with the slides and an extra 4,000 lbs of carring capacity.