OP, you mentioned seats, riding comfort and steering. After spending seven hours driving yesterday it reminds me of how important the comfort of the seats are and how well the truck tracks in the lane heading down the freeway. I have had other trucks that I was frequently tweaking the steering wheel as I drove. It is sure nice driving a truck that has seats that are comfortable / supportive and tracks straight and true. I do not feel worn out after a long drive.
Both trucks sound very capable and looking forward to seeing what you go with.
Good luck to you,
Stu