I have never used the Equalizer or Propride but I can't say enough good things about my Reese Dual Cam set-up.
I have this WDH
in conjunction with this sway control
When I used to tow our TT with my Dodge half-ton, it was NIGHT & DAY difference. Without it passing tractor trailers and wind gusts would make the trailer sway behind my TV but with it I could FEEL the difference. My TV & TT would move but together (without swaying).
I have since upgraded to a F-350 and having a vehicle that weighs more than the trailer makes a world of difference but I still use the WDH & sway control set-up. It is that good...