Improving harsh ride?

Thanks everyone for the replies. I have crawled under the coach to look around, the leaf spring is an 11 leaf pack if I remember right, and they were pretty much flat if not a little inverted, I just figured that was how they were supposed to be. Maybe they are sacked out, I know this coach sat a lot to be 8 years old and only have 21k miles on it. I remember there was what seemed like a reasonable amount of space between the rubber bumpers but maybe there should be more. Nothing looked cracked or broken that I could see, and by my measurements with a set of calipers the sway bars are smaller than the aftermarket bars offered by hellwig so I assumed they were stock ford parts. I'm a little skeptical of the expensive brand name shocks because I tried the bilstein's on the dodge ram 2500 pickup I had and to be honest, I was disappointed, I couldn't tell much difference from the stock ones I took off. But I might give the Koni's a try one day. I see a lot of folks seem impressed just changing to the monroe rv shocks at about a quarter of the price of the koni's. It sounds like the airbags might be the best bet to gamble on, I was hoping someone had used the timbrens or sumo springs with good luck as I wouldn't have to worry about an air leak.

Thanks again for all the great info and experiences. I do appreciate it.