WOW! Going from a RAV-4 to an F250
That is one heck of a different ride you will be experiencing!
You cant go wrong with the Ford TD's, if I had my druthers I would go with the newer 6.4 over the 6.0, Ford did have some issues with the 6.0 PSD, they are all worked out now (for the most part) but the 6.4 is way smoother.. Plus, the new body style looks so much better than the old ones....IMHO
As for the cheby...meh...
J/K! Chevy makes a fine truck as well.
The gas engine will probably strain a bit, especially at altitude, whereas the diesel just keeps on going.
Diesel maint cost are far higher than a gas engine. Any part you need for a diesel engine is 5X the cost of a gas engine part.
EVERY gas station you stop at, even truck stops, have gasoline. Same can not be said for diesel.
On top of all that, you dont have to smell like burnt kerosene everywhere you go......
Just my opinions.....
BTW, where are you that gas trucks are easier to find than diesels?
You can't swing a dead cat by it's tail without hitting a 3/4 ton diesel truck around here, DFW Texas area.