I traded in a 1999 Chevy Silverado and I am very happy with the Avalanche. Chevy has definitely began to compete in the truck arena with quality vehicles, it was almost too late, but sure glad they did it for the 2007 model year, because I was leaning toward the Honda Ridgeline. I was turned off with the 2006 models. Chevy's quality, yes quality material and updated interior and exterior designs sold me. Take one for a test drive see for yourself.
Ride, handling, and quality of the whole vehicle.
Instead of a sliding sectional cover, a folding one on hinges would be nice to allow either the first or third section to be opened without taking the other two sections away from the bed.