Our previous coach was a 36' Winne Journey on Freightliner XC chassis. I replaced the Bilstein shocks with Koni FSD and the ride improved....less harsh.
I did not like the way the coach leaned in turns, freeway off ramps and wanted to minimize the Walmart Wobble. I installed a set of Hendersons Supersteer Motion Control Valves on the air bags. The difference in how the coach handled was amazing. Less lean, less wobble, just made it a real pleasure to drive. Others I know reported similar results with the MCV's.
Source Engineering in Coburg, OR now makes their own motion control valves. They claim to be superior to the Supersteer units so you may want to check them out.