Thinking about getting a 2011 truck, probably a Silverado 3500. Would love to have the new Duramax, but am wondering with diesel prices and the new diesel exhaust fluid requirements, is it still worth it to spend the extra $8k on a diesel? On paper, the mileage and pulling power are supposed to be great, but in the real world, is it worth it? Have any of you diesel lovers switched to a gasser?