I'm looking at hitches also. I'm picking up a different truck tomorrow (2014 F250 diesel, 6 3/4 bed. And a new 2017 Keystone Sprinter 298FWRLS next Wednesday. GVWR - 12,270 on the trailer so I'm going with a 16K hitch.
The short list looks like this.
Anderson, Steel on rails.
PullRite SuperGlide 16K on rails.
B&W Patriot 16K on rails.
I don't think I'll have to have a slider with the new cutaway end caps...but will find out tomorrow when I get the truck and can measure.
I really like the Anderson design and weight. What size bed do those of you using it have? How far can you jackknife if you need to?