For what it's worth (about 2 cents worth!) I towed a very heavy 26' TT approximately 25,000 miles over the last 21 years using an EZ Lift friction damping sway control.
I was very happy with it. During those years it never put me in a position where I thought the trailer was at risk. The only advantage of the Equilizer is less to hook up, but I seem to recall some complaints about noise from the hitch.
Like I say, FWIW.
Enjoy your new unit.
Tony & Margaret Howard
2001 Surf Side 3311 DSO