I really want to ditch the SLI/CF for a while and get a single good card. I am looking for high gaming FPS. I currently have two 6870s. They are decent, but i cannot run BF3 completely maxed at a consistent 60fps and SC2 drops into the 30fps about 30% of the time. I would like a noticeable difference if I plan on spending around $500. Which is the better choice, or should I just wait a year or two?