My 6990 is starting to show its age. I was looking into saving up for a 290x when they come down in price once the 390's come out. I'd like to stay away from dual gpu cards as with the 6990 I really saw how bad crossfire was. If its gotten better I'd be more than happy to do it again but I still see people saying crossfire/sli isn't worth it(at least not till directx 12). Would this be the proper upgrade path for me? What are my other options from here?