I have an Oliver that is about 6000 pounds ready to tow, tongue weight 620 to 720 pounds, depending on what is in the front cargo basket. I have stock suspension and no airbags.
I use the Anderson (2 inch) and it works pretty well, I love the light weight and general minimalist design. It does a great job with this weight trailer, in settling the 200, no issues at all with a light front end. It is a factory option for the Olivers, and most owners either like it, or really like it; few are dissatisfied. Tow vehicles are mostly pickups, but those towing with mid sized and larger SUVs also report good results.
OTH the design does wear the ball, depending on the fit of the coupler... My trailer has a Bulldog and the inside of the forging is a little uneven at the hinge in back. The Anderson pushes forward hard on the ball with several thousand pounds of force when tensioned correctly. This caused my ball to wear badly at first, even though lubed. Anderson admits this happens, but they also say that the wear will stop after the parts seat with each other. This appears to be the case here. The wear was extreme for 700 miles, then it tapered off to nothing additional.
They have updated the angle of the ball and friction material, and changed the triangle plate, due to noise complaints (binding of the ball shank, causing a Spawn of Satan shriek when maneuvering tightly), and hopefully those issues are resolved. Mine is the original design and does not make any noise yet, with about 1600 miles on it.
I do suggest strongly that if your trailer is heavy, for you to install a 2 5/16 coupler on it and use the matching larger Anderson. The 2 inch is rated at 10,000 pounds and is perhaps a little inadequate at this weight range, simply due to the smaller surface (bearing) area. The bigger ball is rated at 14,000K. The larger diameter should help dramatically with any ball wear. If I have any issues with my hitch I will upgrade both the ball and coupler to the larger size.
Anti Sway Weight Distribution Hitch With 2-5/16" Ball
I personally would be very uncomfortable regularly towing more than 6000 pounds behind a 200, but your tolerance may be different than mine.
These two articles might be educational, you may need to register (free) to access the forums.
How To: Anderson Weight Distributing Hitch CENTER FRAME location - Oliver Travel Trailers
Bulldog coupler destroys Anderson ball - Oliver Travel Trailers
John Davies
Spokane WA