I just ordered a pullrite 2600 which is rated for 20k . Search has brought up a few reviews threads on this hitch, and it seemed like everyone was happy. However it may not be an apple/apples comparis...
I went with the Hensley TrailerSaver BD3 air ride hitch, what a different the air suspension makes! Their BD5 model is rated for 28,000 trailer and 5,000 pin weight. That would have been my choice.