I guess that depends on what is most important to you, reliability, or performance. Since it sounds like the Warrior has been babied more and has a more mild engine, it is likely to be a bit more reliable. The LTZ will kick the Warrior's ass in every aspect of performance. If it were me, I would go with the LTZ, because I am a power junkie, but the Warrior may be the more sensible choice. Both sound like a good deal.
Yours truly, sincerelly, love always, Josh aka The DirtDemon.