I am looking to spend no more then $300 for an HTPC case with good air flow and usb 3.0 in the front and at least 1 5.25" optical bay. It needs to support an atx motherboard and the option for a full size/extended graphics card. I want it to fit in with my audio system. I have been looking at some from silverstone witch I like but open to other ideas if I can find one that may meet the needs