New tow vehicle...6.4 hemi or Diesel?

I am sitting in some nameless hotel reading this thread after driving 1000 miles in one day loaded down and pulling loaded trailer. 08 Ram 6.7 Cummins. Keep them under 2000 rpm and the gas mileage is more than palatable. Over two grand and I swear you can watch the fuel gauge drop. Hands down my vote is diesel. I have pulled load after load on this run here lately. From Fargo to Ark. truck just purrs. Get in the hills of Missouri and she don’t even twitch. Real world, real life. That kind of load go diesel.