there are many WDH setups that are way more than adequate for this size trailer and will provide excellent WD and sway control. Which is "best" define what your criteria are.
Hensley, Propride and blue ox are very high quality units. Reese Dual cam, Equalizer are also very good units. IMHO any of these units properly adjusted will serve you well.
I have the Reese Dual cam with 1600lb bars for my 32ft 9000lb trailer with 1450 lbs of tongue weight and it works very well.
In my case one requirement was a hitch that would work with my air safe air ride reciever setup. While I may be mistaken, I didn't see how the hensley would work with that reciever setup. The dual cam is definitely not a casual setup hitch. It takes attention to detail to get it set up properly, but once set up is very good.
