I can't decide on what I should buy right now. I have options of GTX 970s for $150, a 1060 6gb mini for $200, or a 1070 for $320. They are all used but in good working conditions. My current cpu is a FX 8350 and gpu is an old radeon 7850. I'm mostly trying to play PUBG in 1080p now without as much stuttering and I plan on doing a new build in a year. What do you think my best options are?