Hi Daniel,
OK, I admit it: I'm a Lian-Li fanboy
But all those fans and spaces for 12 hard drives, if that's what you want, might be a problem. But if you like the idea of Lian-Li and find the case of your dreams in everything but HDD space then they also do eSATA enclosures such as the
EX-50 - new so possibly hard to find at the moment.
You'll no doubt remember my own recent build, as detailed
here. Only dedicated space for six HDD in that one, though the unused 3.5" external bay currently holds my SSD allowing seven in total. If neither of the 5.25" external bays are required for optical drives then you can add a Lian-Li
EX-23N HDD cage which will fit three 3.5" HDD in the space occupied by the two 5.25" bays. That gets you to 10 hard disks and the enterprising builder might find a way of mounting the HDD cage (or even another one

) above the PSU. But with 2TB units becoming available having even six HDDs might be overkill.

The sideways external bays and minimal looks of the
Lian Li PC-X2000 may not be to everyone's taste but it works for me and the four 140mm fans do a fantastic job, not to mention the additional two 80mm fans cooling the HDD compartment.

Remember, a case is for life and not just for Christmas.
Bob.