I'm not planning on running a liquid cooling system and the armor seems to be built more towards that. Would it be better to get the antec 900 for cooling purposes than the armor? I have no problem accomdating the size of the armor.

Good question. I ended up getting the Armor because the 900 was not an option offered by my builder. Both have that nice USB up top feature, great for MP3 players and cameras. Both have lots of fans and steel mesh, 3-120's for the 900, 2-90s/2-120s for the Armor. Similar price. So I guess it comes down to asthetics. I like the 900 better because it doesnt have those stupid wings on the front.