I don't have the in-cab, airline adjustment option, I just crawl under the truck and turn the **** on each shock. Rancho had a sale last Summer where you got the auto-adjustment control free with a set of 4 RS9000X's, but I think it's expired now. They have had a "buy 3 get one free" deal every Spring for the past 3-4 years, so I would wait for that to come around. I get a catalog from Summit Racing every month or so, and I'll post up any new sale when it comes up. I paid $210 for the four shocks about two years ago when the sale was ongoing, so it took some of the "bite" out of the cost.
The original owner of my Bronco always used the yellow Monroe's and the ride was O.K. You still had the "porpoising effect" where the Bronco would rock you around the cab sometimes. He just had to change them out every few years, cause they are JUNK!!!
I am very ******* shocks, and have broken every one on previous rigs except for one brand. Rancho. I have used RS5000's for nearly 20 years on various trucks and SUV's and believe that they are the best shock for daily driving. I would have them on the Bronco now, but could not get them for a 6" lift. (The Skyjacker Hydros are comparable).
The RS5000's are also being phased out in lieu of the RSX and RS9000X models. I have the RSX shocks on my 85 K-10, no lift. They are softer than the RS5000's, so I do not like them. I have the RS9000X's set on "7", which is just shy of the firmest setting of "9". This is about equal to the old RS5000's, but I can turn them down if someone complains about the ride. It doesn't take long to go back to "7", as the ride is worse at "3" due to having the torsion bars cranked up with Ford t-bar keys. BTW, I have trashed every one of the factory $1 Bilstein shocks on 3 previous Z-71's within 40K miles. JUNK!!!