I was considering replacing my GTX 760 with a GTX 960 but found it tough to justify the $300CAD (taxes + shipping included) price tag given that the performance is similar and the reduction in heat generated and electricity cost would never yield an ROI. Heat generated running Primegrid is a concern for me heading into the summer as I am in a 1 bedroom unit on the 3rd floor of a 4 story building and it gets ridiculously hot in here as a result.
Now I think I will wait for a "GTX 1060" type card to arrive. By then my 760 will be nearly three years old and due for an upgrade anyway.
Badge Score: 2*1 + 3*1 + 4*2 + 6*4 + 7*9 + 9*1 + 10*2 = 129