I am taking a look at the "new" 2011 Ford Explorer. From what I gather, it may average 25 mph on highway driving, which is claimed to lead it's classification. And in the mid-size SUV category, it has changed frame design/build to a smaller car type frame design from a truck chasis, from what I understand. What are some of the basic differences between this vehicle and a Ford Edge/Lincoln MKX vehicle, which I am also considering? Appreciate any comments.