It puts your cargo really far back, making any weight you put in to it behind the fulcrum on your rear axle, virtually multiplying it twofold.
Of all the cheap racks the Warrior products is probably the best, they bolt to the tailgate. But the problem with all of these is the weight on the tailgate. It's not designed to handle that much weight. You can get away with light cargo in one with a stock or stock sized spare. Anything bigger or for more cargo you need something heavier duty.
Some guys use a hitch mounted rack and then leave it at camp when they go wheeling. In otherwords, none of these work for actual offroading.
The bumper mounted systems are the way to go. I have one custom built by All J Products: www.boulderbars.com
. It's one of the best designed and sturdy racks out there. You can check out pics at their site, or pics of my setup from the link in my sig.
The over head racks are okay too, but they add a lot to your height, and then all the weight is up on top raising your center of gravity.
'02 "X" 4.0 AT - Lifted and locked on 35's, D44/4.10, ARB, GY MT/r's, Currie, JKS, MORE, AA/TW, Rancho, WARN 8274, Hansen, All-J custom bumpers, Poison Spyder, CO2, Cobra, Hella, and on and on: J.E.E.P.
STOLEN 3/05: 99 TJ, built for trailrunning