A grand cherokee with quadratrac and an auto is GREAT for wheeling. Fulltime, seamless 4x4. A manual ranger is a bear to wheel compared to an auto jeep! Where I have to do clutchwork crawling rough stuff...because the low range in rangers with stock gearing is still too fast...A grand with an auto would be left foot braking, and the torque converter allows slow, controlled crawl.
As out-of-the box wheelers go, the ZJ gets the upper hand. I don't know why they ever changed a thing! the 4.0, 5.2, and the rare 5.9 in zj's are all solid motors. Weak spot is in the trannys.
My father has a 98 ZJ limited w/ the 5.9...it hauls! limited slip Dana 44's front and rear.