Quoting shwaip
How many internal HD mounts are there? It really only looks like there are 2 of the removable ones, and the first HD would get all the airflow.
There are two mounts under the 3 5.25" bays, and two in the removable tray inside the case. If you are worried about HDD airflow, mount your drives in the standard location, right behind the big front fan and remove the inside tray.
Quoting leonardo
I think it's a bit of a stretch, figuratively speaking, to consider that case a mid-tower. In my consideration, it's in the compact category.
I don't know what physical size you're going off of, but the Panzerbox is 9.6" x 17.9" x 17.9". Compared to an Antec Nine Hundred at 8.1" x 18.4" x 19.4", you'll find they're very close. The Panzerbox is just a bit shorter and wider, with much better clearance around the socket at the expense of less clearance around the cards.
I disagree regarding your proposed use. It would be overkill for an OEM system and the fans are too loud for people uninterested in performance air cooling. It's much better suited for water cooling and people using big heatsinks with heights approaching or greater than 160mm.
I'd love to set up the Panzerbox with a dual 120mm radiator on top, mount the pump where the removable HDD tray goes, and put a reservoir under the optical drive for a water cooling setup for the CPU. Then I'd Crossfire the biggest/meanest cards I could find, and let the big 190mm front fan take care of airflow across the board.