Choose your case carefully, it's what you'll be staring at on your desk for several years because once you get your hardware in, you may not want to take it out again.
There is a world of choice out there. Newegg.ca is also a place you can look.
There is also a ton of moddability and extra things you can add or may be interested in doing in the future so keep that in mind for what you pick. I bought one of these and love it.