Both are fine vehicles. I've had four Expeditions with the latest being an '07 Limited EL. The only engine available now in the Expedition is the 5.4l. It's a good engine but if I intended to do a lot of towing I think I'd want an Excursion with either the V10 or diesel. If you decide to go with an Expedition try to find an EL. The longer wheelbase makes for a better ride and more stable vehicle.