I've been pondering on getting a budget $400 PC. I've never had to pick parts, and I'm not exactly an expert when it comes to picking parts. I've got this so far: http://pcpartpicker.com/p/2Pg3rH . Still deciding on graphics card. Been looking at GTX 750 Ti, R7s, and R9s. Might get one off of eBay, or my friend might give me his R7 270. Nevertheless, I need help picking the rest of my parts, and keep this around (preferably right under) $400, while also being able to run AAA games and other popular games at medium or high settings. I'm open to any suggestions, or anything else I might need. Thanks!