Every manufacturer has lemons, but Chrysler/Jeep take the cake...
Wranglers do have their problems but not nearly as bad as Cherokee's. I have never seen a vehicle have so many problems and bad quality control. Out of everyone I've met or know at school only one likes his Grand Cherokee and thats b/c it's brand new with only about 1000 miles - let a few more miles on there

. Even with only 1000 miles his truck already has lots of rattles while our 5.0 Mounty with 30,000 miles is still tight. I knew 5 people last year that had Cherokee's and they all had new cars when they came back for this semester. Three of them have 4dr 02' Explorers, one has an 02' Sport and the other has a new 4-Runner. They love the Explorers and the 4-Runner is pretty nice too.
My roomate from last year has a 98' Grand Cherokee and within a two months - new trans (4th one), cracked manifold, tranny cooler quit working after the new trans was installed, a lot of electrical problems (takes the key out and sometimes the engine keeps running), for 6 days it would not start and nobody could figure out why, and then one day it started right back up.
Another kid last year had his front axle crack/fall apart on his 02' Grand Cherokee, while driving in the parking lot, only 10,000 miles and the dealer refused to fix it b/c they said it was his fault, after they threatened suit they eventually fixed it but did a shoddy job b/c the front end shook afterwards.
A little off topic but a friends last year had her complete front axle assembly come apart from her 02' Trailblazer and has had her engine replaced twice.
Yet every person I know with an Explorer has no problems and ours never had any.
Explorers and 4-Runners are easily the most reliable and best built.