First of all, welcome to ClubArmada!
The '06 Armada has been significantly reduced in problems like rattles, brakes, squeaking noises, etc. I have an '04 Armada and it's not bad at all. Since I'm not legally allowed to drive it yet (i'm 15), but I must say the power is amazing (I drove it yesterday around my block)
The interior is spacious and comfy. The DVD Navi. is incredible aswell as the DVD player. The looks of the Armada is wonderful and bold and really stands out..believe me, you'll be getting a lot of head turns
It's a very unique SUV since not a lot of people have them compared to the everyday Ford or GM car. Also, if you're into modding your car, www.burtmanindustries.com
has lots of mods for the Armada like rims, grille, and what not which will make it look even better.