Also... given the problems and complaints Jeep is experiencing, if you just got to have one... leasing might just be the smarter way forward. If Jeep/FCA can't solve the problems permanently, then you could just walk away and move on at the end of your lease.
If you must buy, you are probably better off walking into a dealer and negotiating a price on your own... rather than relying on True Car's voodoo. If you are not comfortable negotiating with a dealer, there are plenty of credit unions you can join that have car purchasing programs that do the negotiating for you. IIRC, both AAA and Costco have similar services for their members. Plus, credit unions generally have better interest rates on auto loans.
I really can't recommend True Car. Few months ago their ads peeked my curiosity and against my skepticism I signed up to get a quote and guaranteed voucher (what a joke). The price I got was no less than the MSRP prices I got through Jeep's build and price tool; options and all. There were no discounts at all. In the end all I got out of signing up was daily annoying phone calls from their dealers wanting to talk about a car they knew little about... and had no cars with my specified options to sell. In fact, I'm still getting those calls.
"Fully loaded" on a standard trim in dealer-speak is "I'll tell you anything you want to hear so that you buy a car... so that I can collect my commission, even if it's not the car you think it is."
Knowledge is power. The more you do to be better informed, the better your odds are that you won't get taken.