No the reason your 760 held on for so long is because it's actually a 670 on steroids, and the 670 was a very, very well rounded card already. The higher clock on VRAM was enough to make it stretch its legs even more. People clocked 670's to 680 at stock and they both had ample core oomph. The VRAM upgrade was all they needed to last another gen.
When you go Nvidia x60, the 760 is the exception to the rule. x60 generally isn't as well rounded as that one.
I can completely understand why you'd want the CUDA, but I wouldn't buy it with a 1060 3GB, and even 6GB is meh. Overpriced, not as well rounded and 100% certainly not as future proof as the 760.
RX 470 more GPU for the money. Not just VRAM. Or go back one gen and pick up a cheap GTX 980. Then you've got a lot more CUDA and its on a nice full die with a decent bus width.
I am certainly not going to spend 550+ for 1070. That's 100% sure.
What a decent GPU allows me to do is perform a second render on GPU while CPU is doing one of its own. A decent GPU also allows me to continue modeling while CPU is working. In Blender, each instance is isolated and that I can choose which instance uses CPU or CUDA (Or OpenCL for AMD GPU).
After googling around OpenCL development, it seems OpenCL has gone a long way but still somewhat buggy compared to CUDA.
Before I moved to X99 and E5-2683v3, I used i7-6700 (4770s before that). I wasn't happy with its performance and took a gamble on a secondhand Ebay CPU. The gamble paid off. Now it's time to replace GPU.
Gaming wise, I don't have an issue with 760 actually. It plays all of my frequent games without me noticing lag. But that 2gb vRAM is killer and is why I am, at this point, not even considering 1060 3gb.
RX470 has gotten cheaper but 8gb one costs as much as 1060 6gb.
1050ti is also an option as well as 1060 6gb.
It will depend on what kind of deal I could find around December. Personally, I prefer sticking with CUDA but I am not afraid of going OpenCL.
