They're a really nice case. My partner just built one and added lots of extra noctua fans to it in all the extra spots. It's a nice subtle case.
I'm a big fan of the old Antec Sonata III, and if I ever wanted more hard-drive bays to replace my sonatas - I'd probably go this case for the extra-subtle look, and yet lots of capability and cooling. I've been very impressed.
(I have one sonata 3 with vmware C2Q 3 x1TB RAID5, one with C2Q 1x500GB windows 7 workstation, and Lian Li Armorsuit PC-80B with 16 drives as fileserver)