I have a grand Cherokee, and it is and has been a stunning car...
They do have a few manufacturer faults which can be costly if out of warranty.
Brakes only last 6 months..
Power steering pump packed up
The engine managment system gave up
All were fixed under warranty apart from brakes which has been an on going chore.
I really wanted the SRT8 but the price of petrol and the low resale forced me sideways. If you choose the Cherokee i'm sure it will serve you proud>>