The QX has a few more features available, specifically xenon headlights and Intelligent Cruise Control. The interior has slightly nicer console/dash trim, the panel below the windshield wipers is painted vs. just black plastic, etc. Also, odds are a 2010 Armada is out of warranty at this point whereas the QX might still have some factory warranty remaining.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.