Update....I just put on a set of Ranch 9000's last week and are the BEST upgrade I have ever done to my truck and it isn't even close.
Unloaded they are great, softer ride, very happy.
Loaded I am on cloud 9. It is such a huge difference from those crappy Les schwab silver little things I had on there, WOW. It feels like I upgraded to a DRW, no kidding and I drive an F450 at work every day. I used to be a bit white knuckle, now I feel so in control. Best $400 I have ever spent, even my WIfe said 5 minutes in to our camping trip she can notice the truck riding nicer. Props to Rancho.