On my 198RD - GVWR 5900 I use a Pro series 1200/12,000 lbs. with single sway control. If it transfers to much weight to the front I go a link (or 2) up.
A WDH takes a bit to tune close to perfect. I rather have a WDH a bit over than under capacity. My next unit is going to be a bit larger but I will stay with the TT series.
2014 Ram 1500 CrewCab 4x4 5.7 Hemi 3.92 Rear and Air Lift 1000
2005 Jayco Jay Feather LGT - 29Y GVWR-6500 lbs.
Pro Series 1200 lbs. WDH with Double Sway Bar.
Champion 3100/2800 watt Inverter/Generator-Onboard Solar Power
ALJO 'Forever Young @ Heart' provide on their travels Music Entertainment to Senior Care Homes