If I were to buy based on what's available today, almost certainly a F-150 Powerboost or F-250 Powerstroke.
If I were to buy next year, to include trucks that haven't been formally launched or made available yet, here's the light duty list:
- Sierra Denali 3.0 (only assuming the interior update is a big step up from what it is today, otherwise it's not on the list)
- F-150 Powerboost
- F-150 Lightning
- Toyota Tundra
Looking at 2500 series trucks, it would be the F-250 Powerstroke slightly ahead of the Denali Duramax.
All that said, I will be on the market for a new truck to replace mine this fall, so I'm quite looking forward to seeing the Sierra interior redesign and the Tundra. I'm certainly leaning towards just swapping mine out for a '22 3.0, but if the Sierra and Tundra are available when I start looking in 4-5 months, I'll definitely check them out.