I like the Apex case from Microchipcomputers.com for the low end. I got model number CAS-ATX3 for a Linux box I built with this motherboard. Not in the same class of my Antec 1030, which is great, but the Apex has several nice features including an included case fan, all accessory hardware, access to both sides of all drives without removing cards and motherboard mounting plate, and, separate + and - leads for the power LED so you don't have to modify the lead to attach it to the ECS board. The construction is lighter than with Antec cases, though.
I live near Austin, so didn't have to worry about shipping. Not sure I would order it with another $15 or so in shipping cost, but I was pleasantly surprised when I got it as a low-budget case for a low budget computer.