We had a Pro Series, and that uses a friction bar for sway control. It worked well enough, but when we upgraded the trailer, we upgraded the hitch to a Blue Ox. We were split between the Blue Ox, Equalizer and Reese Dual Cam. Ended up with the Blue Ox due to the simple install, and easy hookup/removal. All are great hitches, though.
Given you have the choice now, go with something that has an integrated sway control. The friction type work, but they are noisy as hell on slow turns and there are some caveats with backing up (you need to remove the pressure from the plate first).