Hi we are trying to sell our landrover discovery es 3.9.v8,due to its rather bad mpg.I cant decide on what would be a suitable vehicle,it will be used to tow a horse trailer with 2 horses in, and a 20ft flat trailer.Ideally it will be fairly good in the mpg department,and be big enough to fit at least 5 people and baggage.what do you use and recommend?