I recommend the Corsair Carbide Air 540. It has amazing airflow, is quiet in my opinion, and has amazing cable management. If you want a really silent computer, use Noctua fans, or get something like a fractal design define r4. The Cooler Master Storm Scout 2 is also a goo choice, and has a handle for easy carrying. Also, newegg.com often has the corsair and cooler master case mentioned above on sale often, and might be right now.