I just bought the new Rubicon express 4 link long arm and love the ride, i got the 4.5 but same thing. i put fox 2.0s on and it has a very smooth ride not as much as the evo's tho. the kit was pretty stight forward to install just takes time cutting (was all bolt on no welding which was a plus for me). i have many pics of the install on here some place, the only problem i had was finding skids, but rockhard just came out with some just for the rubicon express long arms (they have a different crossmember bolt pattern thats all). other then that i have 12000 miles on it and love it!
where in NY if you are on the way to RC i would be more then happy to let you take her for a spin!