Running the Front Runner SlimlineII with the bed rack mounting kit. Have an Ultragroove Metal tonneau under it. Definitely going to go with upgraded Deaver leaf kit (+3’s I think). Truck had RPG mid-perch on the front when I bought it … the combo of all that weight out back and lifted front makes for some Carolina Squat when we head load up for camping.
Pluses - Front Runner ecosystem is very full (tons of accessories). Lower height profile helps some with mpg vs higher racks. Good cassette tonneau means weather protection and no interference opening/closing with the rack/tent on.
Minuses - side mounting options are limited/nonexistent (rack is a little too close to the tonneau to fit most accessories). Tent eats up most of the flat surface of the Slimline … but underside storage is still available. Overall weight is pretty high when loaded up for camp.