I want to buy a GPU that will be used with a 60hz 1440p monitor. I want it to run AAA games at 1440p, 60 FPS and high - ultra settings. I'm considering the 980, 980ti, 390x and Fury (X). Which is best? Which would be best if I were to upgrade to a 4k display down the road? Is the extra cost of the Fury X/ 980ti worth it? Which vendor's heatsink/ quality is best? I might to a slight overclock, but not much.