I am looking to begin building my first gaming PC. I was at first going to upgrade my Dell Optiplex 330 which is running linux mint currently but now I decided to start fresh with a brand new design. I have been looking on pc part picker and new egg, fry's electronics for good hardware components. I want to keep this project at a reasonable cost below $600 or near a cost of a Xbox one since that is what I am replacing and really wasn't enough games for me to have that console I paid $499 for. I played mainly Halo, NBA 2K and titanfall and a bit of Call of Duty Ghost and all of those are on PC besides Halo 4. As well if any of yall have new shooter game recommendations I would like those too. Now to the processor I want to run at least a quad core that has 3.2 ghz or more and 8 GB Ram, maybe a micro atx motherboard. Run a 500-750 GB hard drive, I don't feel I need a 1 TB because most of that space won't even be touched. I want a non costly case but that delivers style and good airflow and have a good cooling source. Can some of Ya recommend some builds you may have used or considered and even if we can go to $600 top price that would be real great.