I was debating the same thing last year. We decided to get another bumper pull travel trailer but needed to upgrade out tow vehicle from a half ton. We had a diesel a few years ago to pull a travel trailer, it rhymes with Mummins, but I never actually used it for its intended purpose. We only tow 5 times a year at best. That truck seemed like it was always in the shop with emission problems. Maybe it was because I used it as a city daily driver in the Arctic and only for a few miles per day, or maybe we had a problem child. All I know is that when we were looking at Chevy's last summer, we decided to go with gas. Yeah the diesel would pull our trailer better, yeah we would get better MPG's towing, but for the extra 10 grand just for the motor, I can buy a heck of a lot of tanks of gas. Over 100 as a matter of fact when I did the math. We may not be the first ones over the mountain to the campsite, but I never have to add DEF, never have to regen, and the maintenance cost is lower. If I was towing a lot, or even drove more, maybe diesel would be more appealing but I'll keep my high revving gasser because it does the job I'm asking it to do.