New diesels ate really great pullers, but if you don't pull most of your miles its hard to justify the higher fuel price plus 100.00 dollar oil changes. Most brands require exhaust fluid too. Never though would be a word in my vocabulary. I have 2005 dodge quad cab diesel that has been great. It gets 21-22 mpg empty and pulling my Ultralite on an open trailer gets 20-21 mpg at 75 mph. Newer trucks will be lucky to do 15. Might look at the f150 Eco boost a friend has one and it hauls ass plus gets 23 mpg empty and are reported to get decent mileage towing. They have a good tow rating to boot.