What bed liner should I get
 

IMO get Line-X or don't bother.

Have had it in my last few trucks and had the entire tub done in my Jeep.
Have had the bed loaded with busted ceramic tile/concrete, brick etc and it all just washes out.

I would agree with this. This is my 2nd truck with Line-x and it has been flawless. I will say the quality of the liner is 100% dependent on the shop that installs it, so make sure you find the right line-x dealer to spray it in that will take their time and prep your bed right.

I have a DualLiner. The bed mat is great for things not sliding around. The plastic sides protect the truck. I have put over 8.6 tons of scrap metal in the bed. If I wash the bed out, it looks great except for a few scuffs. When you throw in rough heavy metal, rubber scuffs...

I've got the Ford liner in mine, if it wasn't a beer can truck, it would be out of there, and LineXed.
I think any dropin would be good enough, they all appear to be about the same.
If going with LineX, make sure the dealer removes the bed bolts, tie downs, and sprays the tailgate access plate separately.;)

linex is what i have; though rhino is a premium option as well. spray-in is the only way to go imo

I prefer the Ford OEM Drop In. In my opinion, it's the best resistance to dents and dropped materials/items.

OEM has the rubber hole plugs to install when not using the tow hooks. Keeps additional moisture out from under the liner. OEM has cut outs for LED bed lights and switch.

All drop in liners are not the same. A DualLiner is in pieces. The sides are plastic, the bottom is a rubber mat. I can drop something very heavy and pointed on it and not dent the bed. Ask me how I know that.

Some drop ins don’t allow the use of the Ford OEM bed divider

You mean "Dual liner"?;)