Cobi,
I have a 2019 3.6 with about 7,000 miles. The car has been excellent. While I was very concerned about the cvt, the 3.6 meshes very well with the cvt. The car has spirited acceleration but not that of a sports car. The fit and finish has exceeded my expectations. No rattles have occurred so far.
The car is simple to operate. The headlights are clear and bright. The radio has a crisp and enveloping tonal quality. One little known feature is a keypad that allows one to lock the keys in the car when going to the beach or a hike.
In summary, I would recommend the 3.6 engine. I never even tried the 4 cylinder for a test drive due to my preference for smooth linear power. Enjoy your ultimate purchase—-whatever it might be.