I am still putting my antec 300 together but plan on running the top and back on exhaust and that is all. I thought about possibly blocking the front top vent off to get more airflow over the bottom exhaust and putting the main drive center of the bottom exhaust. The less dust to pull through, the less cleaning needed.
I dont plan on overclocking. I use my PC as more of a Internet TV than anything. I purchased the model on newegg that comes with the Antec 430 or 480 basiq power supply. I turned it on the other day but couldnt get the hard drive to work, so I RMA'd it.
My case came boxed in the original Antec box.