Trying to decide which way to go on fifth wheel hitch

Another vote for rails. I don't haul dirt and rocks, but I do haul stuff. Last week I hauled a new boiler for a house I own. The rails matched with straps that fit the slots give a rock solid anchor system, not like those dinky little anchors in the bed sheet metal.

I have a very tight driveway where I park the 5er. I don't need a slider since the nose is notched, I do use a slider. Why? Because it moves the pivot back past the rear axle. Gets the old 5er swinging a little faster like a bumper pull.