Everyone knows antex and the 300, I'd want to add the intake fans on it so I could run the two outtakes on med and have good ventilation, the hec case I've never heard of but seems pretty good, and I like the looks, I've never seen a 300 in person and am a bit worried about the noise issue but I'm also worried about ventilation on the hec. Both have free shipping right now which is a big plus.
I'd go with the Antec 300 (I was actually going to suggest it myself upon reading the thread title). Tom's just did a mid-tower case roundup, and the 300 won the "recommended buy" for the best bang for your buck.
http://www.tomshardware.com/review [...] 55-41.html The noise shouldn't be a big deal since you can turn down the settings on the fans if they're too loud.
You are about to answer a thread that has been inactive for more than 6 months. If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.