GTX 1050 Ti
I sold the 1070 and the 1060 for a good price due to the mining craze. I can't wait til this thing blows over so I can get a 1080 at the regular price.
Get the 980 ti. I had the 970 before and it just wasn't enough. Even at 1080p I had to turn down settings on the newer games to get a decent framerate. Now that I got the 980 ti I can turn up the settings and still get a solid 60.
I got an Aqua Blue model a couple weeks ago and so far it's pretty nice. The 3D effect is nice on Dead or Alive and Ridge Racer, but I have to put the 3D level at the middle because at full 3D it makes me sick or gives me a headache. It's weird because I don't get this when using the 3D glasses...
Get a used i3 2100, Sandy bridge motherboard, 4GB DDR3 ram, hard drive, decent videocard, and psu from someone here or on ebay. You probably won't even have to spend it all.