I was just wondering. I have two 760's and am thinking if I should switch. 980 looks very promising for single card and 970 is gtx 780 + 5% with price cut. Recently the 780 ti and the 780 went on sale and they cost $520 and $350 respectively where I live. Should I stick with the the 760's or upgrade. What would be the best option (price + performance + micro stutter + future proofing)?