I had an Apevia case with major quality issues. Among other problems, a factory drone put a screw through the power switch cable. I do think some of their cases look nice, but they just about earned a spot on my personal "Do not buy" list.
I have a CM-690 now. I love it. It is cool, roomy, and has a good arrangement. I even like the subdued blue glow of the front fan, and got a similar fan for the top. I don't need a window, but I like the glow.
Ya, I like my CM 590, but the HD bay is in line with airflow. But then when I have 2 HD's in a bay.. heh not much airflow going through it anyways. I did end up buying another HD (icage) bay with a fan, so I can have extra airflow for the video card on the bottom.
That was the only reason why I converted one top fan as an intake for the CPU HS. But I keep that fan on my 5v/off/12v switch for my fan controller.
The price on the NZXT and CM 690 are pretty close though, in pounds.
I've not used a Tempest or 900. The CM-690 has fan grills all over it; one in front, two on the side, two on top, one on the rear, one on the bottom (plus the bottom PSU fan opening so the PSU has its own airflow), and even one 80mm on the mobo side. With quiet and/or slow fans, it isn't noisy. Mine came with 3x120mm fans (front, rear, and side), and I added a top fan.
And yeah, Grimmy, the power switch lead had a screw through it, shorting it out. It was a screw holding the front fascia on.
I've just purchased the NZXT Temptest and I'm very satisfied with it. It comes with 6 120mm fans, so it provides a lot of cooling for your HDs and mobo of course, and runs very quiet. The 4870 is going to make much more noise if you run the fans a little faster then stock .