I've had my Cherokee for about 6 months now. When I first got it, it had a lot of problems; mainly because of the carelessness of the previous owner. It had a terrible death wobble around 45 mph that I could not figure out. I replaced the transmission mount, a motor mount, shocks, steering stabilizer, and track bar mount. But it still shook. Finally, I replaced one of the track bar bushings that was pretty much gone, and it solved the problem.
The 4.0 6 cylinder is nice. :)
Better driver doors. And a more reliable climate control.