The short story: I am going to get the Edelbrock IAS performers. Thanks to everyone who responded.
I was surprised how long it took somebody to tell me to get OEM replacements considering I indicated that while I own this ZJ it will never go 'off road'. Well, intentionally anyway...
I agree with billy ray that the roughest this ZJ has ever seen is a county fair parking lot. In my original post I tried to say that it probably will not get any rougher. I think it was set up for towing, ski boat maybe?
For anybody who cares, here are my thoughts on your feedback:
Rancho air adjustables: I just don't need adjustables. Maybe if I were going to off-road or tow something big. But then, towing something big with a ZJ is probably not such a good idea.
Monroe's at Sears: I considered these after reading billy ray's reply. The problem here is that I've been bitten by the Edelbrock IAS marketing machine, which started this whole thing... billy ray seems to think that the Edelbrock IAS shocks are off-road shocks. I do not know, this is why I asked.
Carl and Lon helped solidify my desire for the IAS's.
bobmct didn't play. I appreciate bobmct's opinion and thought about it some. I considered OEM shocks. The 'UpCountry' OEM replacement shocks might be a good choice.
And thanks to Sparky, but the OME shocks do not seem appropriate for this situation.
Thanks to the following folks in no particular order. I apologize if I missed somebody, I did read all the replies my ISP provided.
dougw:
I like mine, but if I had to do it again (and will in about another year) I would go with some air-adjustable ones like the Rancho. Pushed these shocks hard and they work well. Thing is I'm not so sure they don't sustain deathwobble by being softer when the suspension is relaxed. Probably a better shock for the rear axle. Then again the design has had over nine years to mature since I got mine.
billy ray:
Sears has Monroe GasMatic LT shocks on sale 40% off ($17.99)
I'm guessing by the vehicle type (5.9 Limited), previous 'improvements' (Yokohama Geolander tires, K&N air intake, and Flowmaster exhaust) that this ZJ never went any further off the pavement than parking in a field for the county fair.
Unless you seriously plan on going off-road I would not buy off-road shocks and you will not appreciate their on-road ride.
Carl: I had edelbrock IAS on a TJ. They were a little bouncy, but that's a TJ. Overall, I liked them.
Lon: Kinda depends on you. The Rancho RSX9000 adjustable allows you to change your shocks from highway to offroad. The newest version of their control *appears* to have resolved most of the leak issues with the older units. If your Nevada trip includes some of the higher speed non-highway but non-hardcore trails, they are kinda nice as you can cruise a bit higher speed without needing a kidney belt. Then if you go into the rougher trails you can adjust them again quickly. I have these, with the newer model remote and do like the ability to change damping quickly between highway and offroad--since my creditors prefer I spend most time on road.
For general highway use with your off-road never needing to rock crawl, the Edelebrock IAS is an excellent choice.
bobmct: FWIW: I put those on my 96 JGC and quite frankly I didn't like them. After another 30K or so I replaced them with new OEM HD shocks which are still in service at 175K. So spend your money on different product.
Sparky: I use and recommend the OME (Old Man Emu) shocks.