3 GTX 760's OR 2 GTX 970's ?
Both setups will cost me the same amount... but which will perform better?
The 970 is roughly 50% better performing than the 760, and even with having 3 760s vs 2 970s I think the 970s would perform slightly better. It would also be less of a power drain and keep things cooler. Also, with this sort of graphic power, I think you are going to be dealing with some other system-related bottleneck before you reach the full potential of either setup.