Pros: 4 wheel coil spring which makes it way more flexy stock than a stock XJ any day. Smoother ride on & off the highway.
Cons: about 6" wider and longer than the XJ. about 500lb heavier than the XJ.
All in all I'll take a ZJ any day. I love my ZJ on the trail. With the front
sway bar discos, it out did an XJ with 2" lift and front disco (and it's stock otherwise).