the ideal tower case has external 5.25" drive cages top to bottom (i.e. Antec 900). I was reading some articles on SilentPCReview and found a list!
brand / model / (5.25 bay count)
AeroCool VX/VS-9 Pro
Antec 1200 - (12)
Antec 900 - (9)
AZZA Helios 910
Chieftec Smart WH-01
Coolermaster Centurion 590 - (9)
Coolermaster Stacker 810 - (11)
Lian Li PC-A77FB - (12)
Recently bought a Sharkoon REX8 Value Edition case for 3 x RaidSonic ICY BOX IB-565SSK
Used a dremel to remove the usb hub thing from the frame, and put a power switch on the back of the case since the buttons on top of the case has to be removed to fit the top harddrive enclosure.
Simple, cheap and good looking case after some modifications