Admittedly I'm a little intrigued by the upcoming Obsidian 900D from Corsair. We reported about it over the weekend already but some more photo's have appeared. The HPTX form factor chassis houses up to four 5.25" devices, up to nine 2.5/3.5" bays (three hot-swappable ones) as well as room for two power supplies. If nine storage bays isn't enough for you, Corsair will also sell additional storage cages, allowing you to increase the number of storage bays to 15. The cooling potential is also gargantuan, there are 15 fan mount locations as well as five radiator mounting points.
The case is expected to arrive in February, pricing is unknown but it will be more than the 800D, which currently goes for $274.99.