I have one on my current coach, a 2018 Coachmen 27’. Makes a big difference in fighting the wheel especially when being passed by trucks or on windy conditions. I did get it realigned and the steering wheel centered afterwards (but I’m sure it was f‘d up from day one, and had nothing to do with the installation). We bought it near Chicago, and drove it home to Texas...steering wheel was about 20 degrees off center.
I also put on SumoSprings, a Helwig rear sway bar, and Bilstein shocks. But that’s more about ride comfort.
Had one on my 04 Mountain Aire. Did wonders for steering, less steering input required, self-centering, and significantly helped with approaching 18 wheelers.
Also had one installed on my 2020 Canyon Star, & it is so easy to drive!
Highly recommend it!