Looking for some opinions. I have decided to update my shocks and also add air bags from Firestone. I want to go with Rancho shocks since they are running the special right now. Guy on phone states the RS9000X and RSX are bascially the same shock design accept one allows for adjusting. I don't see myself constantly changing the settings so was leaning towards the RSX shocks. I have also decided on the Firestone Ride Rite (Model 3330 w/Fifth wheel hitch) for air bags. Appears this one will work best for my application. I have an 04 F250 4x4 Crew Cab Lariat FX4. When pulling my 5er on concrete highways with expansion joints, I get a lot of bounce in the truck and with that the complaints from my wife. I am hoping these changes with help with that mostly. The truck squats some when hooked up but not excessively. Appreciate any opinions.