A better bet would have been the 970 when nvidia were offering 2 free games. I got the Gigabyte gtx970 for £245 sold the 2 game codes on ebay so a gig 970 for £210, what would be the point of a new dx11 card purchase when dx12 is out next month.
You make a good point with windows 10 and DX12 it makes sense I guess...will 780 really miss out on much ?