Choosing the right truck

Hey everyone,

I'm currently driving a 2017 Nissan Titan, and eventually I'm going to have to get another truck. Since Nissan stopped making the Titan, I'm gonna have to pivot to another brand, and I've decided on Chevy, I just don't know which model.

I do work on the railroad, which means long drives (anywhere from 8-24 hour drives), and plenty of off roading. From what I've seen, it looks like the Trail Boss 1500 with the 3.0 Duramax is the way to go. Since I use my truck as an office, I constantly have to turn off my truck since its terrible for gas engines to idle.

I was thinking about the 2500 HD, but people say its a bumpy ride unless youre actually hauling things (which I dont have any plans to do so).

Am I right with the research or am I missing something?