The ACC in my traded 2014 Grand Cherokee was better implemented than the one in the '16 Denali, but as others have mentioned, I will never buy another vehicle of this type without ACC. It is that useful in day-to-day driving, especially long distance. I just hope that GM will refine the software as it does need to be 'smoother'; the 'Far' distance needs to be extended, and it needs to stay active down to 0 mph for a few seconds like the Jeep did without cancelling at 10 mph IMHO.
Bish
Mine doesn't cancel at 10, it will take me to a full stop '16 ESV