I too am getting ready for a new 3500, currently have the B&W with the companion hitch. Checked with B&W to see if their system will work with the new RAM, information I received is that I will need to buy a new base if the truck is equipped with the 5th wheel prep package if not I can install the B&W Turn Over Ball to use what I have. When I checked on the cost it seems to be a wash so I will probably order the 5th wheel prep package and then get the new B&W system with the pucks. I have been please with the B&W, no issues and they stand with their product.
Stop the show, B&W told me when I called back to confirm the availability of their new system that it is about 10 weeks out and they are having trouble keeping stock. I now plan to buy the new truck with out the 5th wheel prep so I can use my B&W.