I have an old school, beige, full tower, all steel Antec ATX case. I still use it. It was cutting edge at the time with a side opening case, removable hard disk cage, and room for 4x80mm case fans.
I have several Cooler Master cases and highly recommend them. Much easier on the pocket book than Antec and don't lack in features. If you want to spend a little more money elsewhere (e.g. PSU or HDD), you might even consider the Cooler Master Gladiator 600 which is $20 less than the HAF 912.
http://www.microcenter.com/single_pr...uct_id=0317308