I am starting mine with first picking out the rub rail, the metal edging around the bed. I also want to use 2"x6" planking, .
I have a particular rub rail in mind, was very common on older trucks, so the hight of the rail plus the thickness of the flooring will determine the required hight of the cross bones.
I know many beds are 3/4" hard woods. I dont want to dump a lot of money in the flooring, I can get 2x6 pine that will be cheap and plenty strong enough and look good.
The photo of the dodge truck rub rails/side rails is very plain and what I want, stake pockets, a few hooks, couple lights.
If I had a truck that was going to haul all the time, the second photo might be something more desirable. You can see where this quickly gets to personal choice.