Yes, I'm very happy with the ride after the add-a-leaf. I was expecting a stiff/harsh ride, but it's amazingly compliant. Not much different than stock, except I can feel the rumble from the tire tread at low speeds(10-20mph). Looking forward to the add-a-leaf when towing the Camper(6000lbs).
Finally got around to putting on the Zone 6.5" lift on the 2014 LTZ. Had to install a Add-a-Leaf in the rear to get it to sit level. Running 35 x 11.5 Ridge Grapplers on stock wheels. 1.5" spacers in the rear to match the front poke. Very happy with the results.