Wow, this thread is still going. Anyways, I just got the P160 with the window. VERY DISAPPOINTED. Now I'm gonna rant.
-What kind of idiots make you take of the front bezel in order to take off the non windowed side and NOT mention it in the instructions. Still, even if they did, bad idea.
-The case freaking amplifies (that's right, amplifies) medium-high pitched sounds so that closed, it's very annoying.
-The front slot for a 120mm fan is TOO SMALL. Jesus, I could barely fit a TT in there and while pushing it in, the sides stripped a wire. AND they don't even give you screws to attach it to the the front slot, normal ones will not work. Solution - velcro, but it resonates like mother.
-You can't just pop off one of the front 5 1/2" drive covers to slide a drive in, you actually have to take the side, then front bezel off. Not very friendly.
-The aluminum is very weak. The support bar going horizontally across the case can be bent with ease as can all the other parts in the case.
I'm seriously considering getting rid of this case. It is quiet, but not by much.