x2......I don't have IRO CA's myself, but based on every product I've got from them they are top quality. IRO is hands down the best company for WJ aftermarket support in my opinion, and very efficient in processing orders also.
I have Rusty's Adj. Uppers and Lowers on my XJ, my WJ is stock till after the new year. If you only want one set of Adj. control arms go for the Lowers. Quality wise I have no issues with them and I've had the lowers for nearly 5yrs now.
88 XJ-Lifted, Locked, and on Jackstands
69 CJ5-In peices
JKS adjustable control arms are the BEST on the market, but I think they're also the highest priced. The Rusty's CA's look ok. Are you going to get the ones with the bushings at both end or the flex joint? IRO's adj CA's look to be the lowest priced fwiw...
99 WJ Black on Black on Black
4.7L V8,20x10 Wheels,33/12.50/R20 Nitto Muddgraplers,6.5" IRO Long Arm Kit,Flowmaster 50 SUV Series Exhaust,4 10" Memphis M3 Sub's In Slot and Port Box,2000 watt Memphis Bell Amp,300 Amp Alterantor,Memphis Amp Kit,5% Tint All The Way Around,Black Projector Lights,Black Projector Fog Lights
If you have 4" of lift, you might want to stay with stock front lower arms if you're not going to get adjustable uppers. If you install adjustable lowers and lengthen them to get the caster and wheelwell centering correct, you'll make the pinion angle much worse without the ability to adjust the uppers.
The Rubicon Express control arms are very well made and have easy to replace bushings. I highly recommend them. PM me if you'd like pricing.