I've owned this car for 4 years now. Bought it with 155k on it. First off, the car is a beast. Fast and really thirsty. Would probably beat most going from 20-50 mph. I test drove a BMW M3 this past weekend and honestly the Jeep has more torque. For better performance I sometimes kill the OD switch which bumps up the RPMs. The car is also a beast in the snow. It's almost impossible to get it stuck in anything. That said, Jeep really dropped the ball on its construction. The rear differential is the same as the base model 6 Grand Cherokee and can't handle the torque. The rear end makes this disgusting popping noise off the line and sounds like its about to fall off. All 5.9s have this problem.
Deceptively fast. Seats are comfy. Great sound system too.
Tires scrape at parking lot speeds in tight turns as a result of AWD. Also, the rear end of this thing is ATROCIOUS. If you buy one used, know that it will go at some point. I'm surprised Jeep never recalled this. Probably because it costs over $1k to fix.