the antec p182 is quieter with the fans on medium than the nine-hundred was with the fans on low. i have 2 raptors and an 8800GT, both very loud items, and i can barely here the machine, i love the noise dampening side panels
the stacker is so much easier to work with, but i think the p182 looks better once everything is said and done. the stacker is definitely not as quiet. if you are interested and i still have it, i am selling the stacker. its got the side panel window, its got a mesh grill on the other side, and your choice of antec tri cool fans or scythe ultra quiet fans. make me an offer