arkashiks

Go for 1070 without dubts. Performance roughly the same as 980Ti and in same moment 1070 has: newer architecture, better TDP (lower power consumption and less heat).
 
http://gpuboss.com/gpus/GeForce-GTX-980-Ti-vs-GeForce-GTX-1070

To put it simply, AMD just needs to update their platform.  It's old.  AMD is not a bad company or manufacturer, but they put their eggs in the wrong basket when it came to the 'core wars'.