I had Reese rails and 2 different Reese hitches with the last one being a 16k. Got a new rig which is heavier and upgraded hitch to a B&W 18k Patriot. The B&W fits right into the Reese rails. When we got the dually, it didn't come w/ the 5th wheel prep/puck so I went w/B&W rails. IMO, the B&W rails are much more beefier than the Reese ones on old truck. As for the Patriot, one of the BEST investments I made for a 5th wheel hitch. Old Reese still in shed.l