A ProPride hitch does not need or use an external friction sway control unit.
I think the ProPride is the safest of the hitches with the Hensley right up with it. Both are significantly more expensive than the next level. By design, the trailer cannot pivot behind the TV unless the TV turns first. The hitch will keep the trailer straight behind you except in the most severe situations. With a minimal amount of dry lube on the hitch, I have not had problems hitching up. I have not had any white knuckle experiences. This is on a short bed F-150 with stock 20" P rated tires and no other modifications to the suspension. Trailer follows the truck "like a little puppy".
I have read enough postings to believe that the Blue Ox and Equalizer hitches mentioned are very adequate hitches at a significantly lower price point. Many say they don't sway. I think it is telling that they are advertised as "sway control hitches". My belief is that under most circumstances the built in anti-sway does a good job of absorbing the sway energy. I have also read an engineering study that claims using a ball mount hitch with a sway control device is susceptible to uncontrollable sway under certain circumstances. Both of these hitches allow you to backup without disengaging the anti-sway. Both of these hitches have been used safely by many for many years
My comparison is the difference between disc and drum brakes. Drum brakes found on most trailers do the job of stopping the trailer at a moderate price. Disc brakes cost more and stop better. Discs fade less and from most reports stop a load in a shorter distance.
Like the brake option where folks who have spent the money to upgrade report the improved stopping. 99% of the people who switch to a ProPride or Hensley hitch swear they will never go back.
It seems to me that the ProPride and Hensley hitches are more likely to be seen on Airstream trailers. I'm not sure if that is because those owners just have "money to burn" or they are willing to spend more to protect their more expensive trailers.
Bottom line - you need to decide what your budget can absorb and, if what I believe is improved safety, is worth the price to you. Do a search on this and other RV related forums and see what you find. LOTS of opinions and information can be found. I think the largest amount of information on the Hensley and ProPride hitches can be found in threads on the Airstream forum. (You only need to be a member to post - though they accept folks with any brand trailer)
I'll add that I really like the jack method of applying the WD. I am able to dial the amount of tension exactly to what I need. I know I use a little less tension if I am traveling with fresh water, it reduces my tongue weight pretty significantly. I use a cordless drill to apply or remove the WD tension and also use the drill on my stab jacks. So set up and tear down is pretty quick.