I think it is interesting to hear that most of "comparison" in this thread to Diesels are in relationship to fuel mileage. To the best of my ability predicting the future.....I've owned my last Gasser and would never tow without a Diesel. For me it's all about how easy it tows and really nothing else. Tows easier, quieter, up hills, down hills and flat. IF I get slowed on a steep up hill grade due to some loser in the fast lane, I can gain speed rapidly up steep hills @ 2500 RPM. And, yes there is a lot under the hood of the new Diesels and it's gonna hurt when "fix it time" comes. But I will live with that in order to have the towing ease.........