I took my 18k Companion from my 98 RAM and is earning it's keep by towing our over 19K Mobile Suites. It is for sale since I have the B&W RVK3600 ordered to drop into our 15 RAM on order.
IMHO if you are hauling a heavy 5er I would stay away from the Andersen.
There is no doubt B&W under rates their hitches and Anderson over rates theirs along with others. Kind of like Sears shop vac claiming they. "Develop 6 HP".