Congrats on the new truck! I just bought a 2012 1500 LTZ, I also looked at the Denali. I didn't need the bigger engine, I think the 5.3L is a little sportier/suits my needs better, the 6 liter would be good if I was doing a lot of towing. The Denali was also $10,000 more than the Chevy and I didn't have that much cash.

You got one sweet ride, congrats! Lets see some photos!