Personal experience here...
Rusty's was NOT very strong, Maxed ouot quickly and wonderd. Worst part was the SUPER weak Tie rod. I could flex it about .5"+ while installed adn just grabbing it in the mid and pushing an pulling on it. Very weak.
The other one shown there will Require More work then most are able to do. You will need to remove yoru swaybar attachments on the axle, and relocate them if you want to keep the swaybar. You also will have to move the Track bar axle end up to not only eliminate bump steer but also to get full turn to turn steering. The Tie rod when its straight side to side will hit on a few different places on the front axle assembly and limit your steering.
Either just do the ZJ or do the currie..