I have been charged with the duty of finding 2 new survey vehicles, one to replace a dinosaur and the other to outfit a new crew. Our company performs work with a diverse group of clients in diverse conditions. For the past 15 years we have almost exclusively used F150, extended cab, 4x4 pickups with equipment boxes and camper shells. Over the past 15 years we have also had mixed results with the longevity and performance of these vehicles, so we are researching other possible options. Do we step up to ¾ ton, crew cab, 4x4 pickups or down to a midsize truck like a Chevy Colorado, extended cad, 2wd or purchase an entirely different type of vehicle all together. We are only interested in buying new and better fuel millage would be a plus. Any thoughts?