I had the same problem most of you started with. Bad autoride. We owned our denali awd since new in 2011. 90k later I inherit this from my wife as a daily driver. I Purchased the 4/6 custom from NorCal. Biggest reason was for the adjustability from season to season. 300+ miles later set at 3.5"/5" turned this truck into a pleasure to drive. Since 4miles off the lot I hated driving this thing. Don't have any doubts about spending the cash on a setup like this. It has taken all the bad characteristic of handling away. My wife even commented that if feels more safe to drive. Waiting for spring for some different wheels and tires. At that point I will put her down to 4/6.
Thanks for reading
Thanks for reading