Cache Wrote: What are your other PC specs? Especiall your CPU, as it may bottleneck any better performing GPU. As for a sole GPU pick, I'd get the 1080. Its only a bit more expensive than the 1070, but does perform better.
My CPU is an i5 Skylake 6600k overclocked to 4.5ghz, and I have 16gb DDR4 Corsair Vengance RAM 3200mhz. It's only my CPU thats actually outdated.