The new and improved gas engines from the big three are far and away better than the outgoing ones. I believe they will slowly increase in popularity relative to the expensive and problem prone diesels as a great choice for medium duty towing. Like I said, I already have nearly 6,000 miles of towing on mine this summer and didn’t miss the diesel once. If you are a hot shot and tow for a living that’s one thing, but if you tow recreationally or in a construction/landscape/farm capacity I think the new large displacement gas motors make sense. For the cost of some of the repairs a diesel might incur (Busch CP.4 fuel pump at nearly $10,000) you could probably drop a new crate engine in a gas truck.