I drove a Nissan XTerra for 6 years and it was one of the best vehicles I have had, other than my current car, which is the bomb! But anyway. I thought I wanted an Armada until I heard how much gas it takes to fill it up and how much it uses it. I can't spend $400 a month on GAS then $400 a month on the payment then $100 on the insurance, plus car tags and taxes, that vehicle will cost you a thousand a month just for ONE CAR.
I think if I were going to go back into a Nissan SUV I would probably go with the in between size, the Pathfinder. It's bigger than the XTerra but smaller than the Armada. And has way better gas mileage. I got great gas mileage in the XTerra.