Ditto all of the above...my buddy's wife drives one and they love it...wish GM would've put the Dmax in a Suburban, but that's another gripe for another thread. You could also look for a Suburban with the 8.1L in it...that's what my wife drives, and I love the thing to death...they're very reasonably priced, are cheaper to maintain than the diesels, and will be easier to find also...mileage will be in the low-to mid teens but it's rated to pull a 12k pound bumper trailer, and it would flat run and hide from any Excursion you run across...
