Upgraded Sway Bar for Pulling 5th Wheel

Are there any 5th wheel owners out there that have upgraded their truck's sway bar with a beefier unit, such as the Hellwig Big Wig Sway bar? I know that many camper owners do this, and some trailer owners do also, just not sure of any benefit with a 5th wheel. If so, I would like to hear of your experience and of the benefits of having replaced your stock sway bar.