Most likely everyone will defend and recommend what they have.
I have had both.
First...for a 34 footer, I'd move away from friction bars.
Second...get the correct bar rating for your loaded tongue weight.
Equal-i-zer is a good system but is basically friction based anti sway. It is initially easier to install than than Reese Strait-Line.
Equal-i-zer has more parts and pieces..clips, pins, that are part of the hook up and un hook each time you use it.
Dual Cam must be installed correctly and dialed in. Once it is, it does a little better job of sway control from my experience.
Equal-i-zer holds the trailer in whatever position it is in...Dual Cam snaps or returns the trailer back into a straight line with the tow vehicle
It is also somewhat easier to hook up and un hitch each time you use it.
A biggie for me was that Dual Cam is not as noisy during turns and backing. Our Equal-i-zer really screeched and screamed. (yes, I used all the lubricating tips).
Both are really good hitches and you really can't go wrong with either.
"If we couldn't laugh we would all go insane."
Arctic Fox 25Y
GMC Duramax
Blue Ox SwayPro