i'm running the rancho 9000RSX's and love them. they are adjustable so if i'm off roading, towing, or want a better start off the line i crank them down. but they also give me a smooth ride if i want too. i got a buy 3 get one free from samsoffroad.com but 4 wheel parts also has specials on them sometimes. Very easy to intall however the ranchos have larger tube diameter and they do hit the upper a arm just enough to take some of the paint off the shock if you are on 3 wheels while off roading . if you dont do any seriouse offroading you'll be fine not that its a problem anyway they just bairly touch.
sams right now is selling 4 of the 9000's for $289.95
and if you dont wanna spend that much their rs5000's are $150
but i would never but another shock unless its a Rancho
I have Bilsteins on mine, like them alot, a great shock.
Autozone here had to special order them, but at no additional charge, arrived fast. $230 i believe for the set of four.
Install is very easy. i couldnt get the rears to compress enough to fit in, so i jacked to rear up as high as i could get it to lower the axle and its mounts to allow more room. Then after installing the top mount, i compressed the shock with another jack and slid the bottom in to its mounting holes.