I was looking at different graphics cards, and narrowed my choices down to two (9800GT). One comes with Call of Duty 4 (XFX), and the other comes with Call of Duty World at War (EVGA). Since they're both essentially the same price, and there's no noticeable spec differences, I was going to choose based on the game...but both look great, with great reviews. Which would you recommend? It'd be running on my desktop, OC'd to 2.5ghz.