I use the B&W hitch w/Companion. It is rated for 18,000 pounds and can be used with either a conventional pin box or a goose neck style.
If you plan to tow a lot you may want the TrailAir Tri-Glide Air Ride pin box option. It will provide a smoother ride for the front of the trailer and give you more clearance between the trailer and bed rails of your tow vehicle.
Jut my 2c
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