Does the 5850 or 5870 cards have long-term value? I'm generally an MMO and FPS enthusiast, but I tend to stick with games like CoD, L4D, etc... Currently, I have a 23-inch monitor that displays 1920x1080. At this resolution, which cards could give me maximum settings with AA? Note: I am getting a Corsair 850w PSU with SLI/Crossfire Ready and 80 plus certifications. I also plan to update my motherboard/cpu in the future.