as far as the tj go if your in a area where they use salt on the roads in winter just forget about it. they arent salt freindly and especially corrode at all the hinges... all the hinges, and look heinous in a couple of years. exaughst manifold cracking, interior leaks, and weak front and rear differentials (if big tired). the grands look for ac problems that can be x pen ive to fix, verify their "auto full time 4 wheel drive" works as its a bit of a odd system. if big tire`d weak diffs. i`ve owned and own a lifted grand and previously a lifted yj ( a older tj). the grand is a real nice all around vehicle around town and road trip wise... if you like 14 mpg...the yj was cooler but was a crime to drive in buffalo ny winters , which i only briefly did and was cold and basically uncomfortable...but cool...7inches of lift and 35`s, whatever. even stock for a dailey driver the grand is hands down the way to go.