Congrats on considering the Cherokee. We love ours and have really enjoyed the investment. If you are considering doing anything off road, I would consider the ADII hands down. In my humble opinion, the ADI is for getting out of your snow covered driveway, and about nothing else. If you want confidence on any unimproved road, ADII is the way to go. I have a Traihawk and the Cherokee's 4 wheel lo option with rear lockers is the bee's knees.
2015 Cherokee Trailhawk:
Granite Crystal, 3.2L V6, 8.4 Nav, black leather, sunroof, tow, tech, comfort/conv, no hood decal, 9 speakers, CD player, Maximum Care lifetime warranty, Mopar first aid kit, rear rubber cargo mat, Thule Aeroblade cross bars (black), Thule Rapid Aero feet, Kuat Vagabond X cargo basket, RRO rock rails with smooth covers, Mopar door sills, Raingler ceiling net, Raingler seat headrest handles, MFC aluminum lift kit, RRO winch bar and Warn M8000S winch, BFG T/A KO2s