Corsair has launched the Carbide 275R which is a mid-tower ATX case that promises good airflow as well as support for a 280mm or 360mm radiator in the front and a 240mm cooler in the roof. In addition you get a tempered glass panel that shows off the interior of your new PC, and as the main compartment is open and unobstructed you get a good, clear view of your components.
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips