I have a Husky round bar WD hitch with the separate sway control bars, I say bars as the hitch came with one and i purchased the second one to install it because of the sway I was encountering. I have now pulled it a few times with both bars on and I still get sway have gone over the setup and weights and tires etc......... but it is still there I am considering upgrading to the Equalizer 4 point they say that the hitches with built in sway are more superior for controlling sway then the side bars are.
Weight distribution works great but the sway not so great it does work I dont get any violent white knuckle experiences yet, hope I never do.
If you are going to spend the money on a decent hitch I would go with one with built in sway control.