We just picked up our '07 LTZ. So far it's been absolutely wonderful. We've got every option but the Nav/rear cam. Previously had a '00 Yukon, and the new platform is by far superior. Love the new interior, very high quality materials, no "cheap plastic" look that was common with GM for so long. We've been running only E85 because it's almost $0.60 cheaper here (South Dakota) than regular unleaded. We're getting about 11mpg in town and 15 or so on the highway. That compares to about 14/18 with the Yukon on 10% Ethanol. I'm going to run a tank of 10% Ethanol next time to get an idea of how well the Active Fuel Management does. So far, can't tell when it's in V4 vs. V8. Been great!!
Absolutely Everything! Love the new interior, and especially the DVD in the radio stack.
Like to have the 6-disc option w/DVD. Better milage on E85 would be great, but I'm not complaining to much since it's about a wash on cost with the price of E85 here.