Corsair's new flagship, the Obsidian Series 900D is a huge case, but also a case with huge possibilities. Apart from the models of a few specialty manufacturers, there are few competitive products.
able to accomodate HPTX motherboards and dual power supplies; plenty of room for CPU coolers; expansion cards; cable management; room for five coolers and fifteen fans; modular HDD cages provide for great flexibility; tool-free installation of optical drives; 3.5-inch hard drives; expansion cards,...
ex factory cooling performance and noise level; modification of the case can be time-consuming; no second recess for cooler mounting on dual-socket motherboards