Might sell the F450 and go F550 with liquid springs

I am running stock suspension with airbags that I am increasingly lowering. I know the tires are a big part of the rough ride but the idea on an active suspension system that can react in 40ms it will help I bet. My F450 has less than 30k miles so I bet it will still be worth close to what I paid for it. If I am buying new, I would be happier with the F550 than a F350. The turning circle of my F450 is so much nicer than F350's.