I've had airbags on my last two duallies and love the "adjustability" of them as I added a Viair 10007 onboard air system with the Firestone dual pneumatic gauge, with them plumbed independently. I can now change the air pressure in the bags as road conditions change. I also put in a air coupler on a ball valve under the right rear door so I can air up truck, trailer and bike tires on the road or in the campground. I have Firestone bags, but would not hesitate to use either AirLift or PacBrake as they do the same job.