You have another option too, American made Pull Rite. I've had my slider for 8 years with zero issues. They make a 25 K for factory puck systems.
Having said that I just purchased my 1st Reese hitch, the 26.5K Elite because it matched up with the capacity of my F350 DRW 4x4. I'll be watching for any glitches and report back after I tow with it in a few weeks.
Brian & Pam 15 F350 DRW 4x4, 13 36 Excel GKE L, 07 Goldwing ABS/Nav, 15 Eddyline Caribbean 14, 14" Weber Smokey Mtn, Americas Mailbox SD, FT