If you are looking for a great truck without the rough ride, this is the one for you. I have driven 4x4 trucks all of my adult life and I can honestly say I will never own one again. The Avalanche rides better than my wife's Xterra (by a large margin) but still gives you the feel of driving a truck. When they first came out I thought they looked awful, but the exterior has grown on me. Anyone who doesn't like the Avalanche obviously has never driven one.
Hope they come out with a diesel model with the Allison tranny.